ALARCON, Circuit Judge:
David Silverman appeals from his conviction for conspiracy to distribute a controlled substance (cocaine), possession with intent to distribute a controlled substance (cocaine), interstate travel in aid of racketeering, and aiding and abetting, in violation of 21 U.S.C. §§ 846 and 841(a)(1) and 18 U.S.C. §§ 1952(a)(3) and 2. He seeks reversal on two grounds.
First, he argues that the district court erred in admitting into evidence the extrajudicial statements of an alleged co-conspirator. He claims that apart from the contested statements themselves, insufficient evidence established his connection to the conspiracy.
Second, he contends that the district court erred in instructing the jury that a defendant’s concealment of his identity from government agents would support an inference of guilt of the charged offenses. He asserts that because the concealment in this case occurred two months after the last act committed in the course of the alleged conspiracy and because the agents did not disclose the charges against him, no inference of guilt is justified.
In our initial decision on this appeal, we affirmed the judgment of conviction. United States v. Silverman, 771 F.2d 1193 (9th Cir.1985) (2-1). We subsequently granted the petition for rehearing and withdrew our initial decision. United States v. Silverman, 796 F.2d 339 (9th Cir.1986) (2-1). We sent our second opinion in this matter to the clerk’s office for filing on June 22, 1987. We were compelled to withdraw that opinion the next day, however, because of the Supreme Court’s decision in Bourjaily v. United States, 483 U.S. 171, 107 S.Ct. 2775, 97 L.Ed.2d 144 (1987). Bourjaily distinguished decisions we had relied upon in our second opinion on the issue of the admissibility of a co-conspirator’s statements.
Having reexamined the record in light of Bourjaily, a majority of the court has concluded that the district court erred in admitting the statements of David Silver-man’s alleged co-conspirator. Because that error was prejudicial, we now reverse.
Reversal based on prejudicial error in the admission of evidence does not bar retrial. United States v. Harmon, 632 F.2d 812, 814 (9th Cir.1980) (per curiam). We, therefore, address David Silverman’s contention that the district court erred in instructing the jury on flight, to assist the Government in determining whether retrial of this matter is warranted.
Before presenting the compelling reasons that support our conclusions, we set forth the facts pertinent to a clear understanding of the issues we must resolve in this case.
[573]*573I. PERTINENT FACTS
A. Motion in Limine
Prior to trial, David Silverman, through his attorney Bruce M. Kaufman, filed a motion in limine requesting that the district court exclude certain hearsay statements allegedly uttered by his sister, Pearl Phoenix (Pearl), on the ground that the Government would be unable to demonstrate a preliminary fact upon which admission of the statements depended — David Silver-man’s connection to the alleged conspiracy. The district court denied the motion “without prejudice to object to the admission of such evidence at the time of trial or to move to strike same.”
B. Testimony of Accomplice Willard
The Government’s principal witness was David Willard (Willard). Willard testified pursuant to a plea agreement in which he promised to assist the Government in exchange for its promise to dismiss certain charges against him.
Willard testified that he purchased cocaine from Pearl and resold it to Robert Zeitziff (Zeitziff). On three occasions, Zeit-ziff provided a private airplane in which he, Willard, and Pearl flew from Reno, Nevada to Van Nuys, California to obtain cocaine.
The first flight took place on May 13, 1983. After landing in Van Nuys, Willard called Valley Cab Co. to request a cab for Pearl. Willard testified as follows concerning Pearl’s conduct and statements at the airport:
Q. And you called a cab for her?
A. I called a cab for her and she went outside to a pay phone and at which time—
Q. Why did she go to a pay phone?
A. She told me she was going to call somebody.
Q. Did she tell you who she was going to call?
A. Yes, she did.
Q. Who?
A. Her brother.
The record does not reveal whether Pearl completed this call or, if so, whom she called. The record does show that Pearl had two brothers, Frank Silverman and appellant David Silverman, both of whom resided in the western part of the San Fernando Valley.
Pearl departed in a cab. After having been away for two or three hours, she returned to the airport and gave Willard a package containing about six ounces of cocaine.
Zeitziff, Willard, and Pearl again flew to the Van Nuys Airport on May 31, 1983. Willard again called a cab for Pearl. The transcript contains the following testimony concerning this event:
Q. When you first got there what did you do, what did Bob Zeitziff do?
A. He went to take care of the plane.
Q. What did you do?
A. I went to call the cab.
Q. What did Pearl do?
A. She went to the pay phone.
Q. What did she do?
A. She called somebody.
Q. Who did she call?
A. Said her brother.
MR. KAUFMAN [Silverman’s counsel]: Objection.
THE COURT: What is the basis of the objection, please?
MR. KAUFMAN: It’s hearsay. Also calls for a conclusion of this witness.
MR. SULLIVAN [government counsel]: Your Honor, I submit it’s not hearsay. He’s basically explaining what the witness did.
THE COURT: All right, the objection will be overruled.
Again, the record does not show that this call was in fact completed or, if so, which brother was called. On this occasion, Pearl was away from the airport for an hour or two. Upon her return, she gave Willard another package containing approximately six ounces of cocaine.
Pearl, Willard, and Zeitziff flew to the Van Nuys Airport for a third time on June 25, 1983. Willard testified that upon landing they followed the “same procedure.” Willard testified as follows:
Q. Where did you go?
[574]*574A. I went to call a cab.
Q. Same cab company?
A. Same cab company and Mrs. Phoenix went to make a phone call.
Q. Did she tell you who she called?
A. Yes, sir.
Q. Who?
A. Her brother.
MR. KAUFMAN: Objection, Your Honor.
THE COURT: All right, is that on the same ground as previously?
MR. KAUFMAN: Yes, Your Honor.
THE COURT: Objection will be overruled on the same basis as previously.
This testimony does not establish whether the call was completed. It should also be noted that the court did not articulate the basis for its previous ruling. See quoted portion of the transcript concerning the May 31, 1983 extrajudicial statement set forth above. We must assume that the court overruled the objection because it accepted the prosecutor’s theory that Willard was “basically explaining what the witness did.”
Willard’s testimony continued as follows:
Q. Did she tell you her brother’s name?
A. Yes, sir.
Q. What was it?
A. David.
Q. Did she tell you his last name?
A. Silverman.
Q. Did she leave in the cab?
A. Excuse me, she didn’t tell me she called David Silverman at that time. I knew the name was Silverman from before.
Willard further testified that on this occasion, after having been away from the airport for several hours, Pearl returned to the airport in a little blue car driven by a man. Willard made an in-court identification of Silverman, as “lookpng] like the individual” who was driving the car. On redirect examination, Willard stated that the driver “looked very much like him [David Silverman].” Willard testified that he had never met David Silverman, but had seen a photograph of him at Pearl’s house prior to June 23, 1983.
Willard was arrested shortly after his return to Nevada following the third trip to Southern California. He promised to cooperate with the Government. As part of the bargain, Willard agreed to record his conversations with Pearl and her husband, David Phoenix.
The Government introduced a tape recording of an August 1, 1983 conversation between Willard and Pearl. The district court overruled David Silverman’s objection to the playing of this tape without explanation. During this conversation, Willard asked Pearl, “Is your brother cool?” Pearl responded, “Don’t worry.” The court indicated that this statement was admissible as “co-conspirators’ statements.”
Following the playing of these recordings, Government counsel asked Willard whether Pearl or David Phoenix had told him, prior to May 13,1983, the name of her supplier of cocaine. Mr. Kaufman, Silver-man’s attorney, objected to this question. The court then heard argument on the objection outside the presence of the jury. Mr. Kaufman argued that the Government had not satisfied its “foundational requirements” for the admission of the extrajudicial statements of a co-conspirator. The court overruled the objection stating that it was “a fairly close, tough question for the court to tackle but nevertheless I think that it does meet the test of [Fed.R.Evid.] 801(d)(2)(E) and so I’m going to permit the question to be answered.” The court did not discuss the evidence that it believed satisfied the government’s burden of establishing the preliminary fact of Silverman’s connection to the conspiracy.
Following the court’s ruling, Willard testified as follows:
Pearl Phoenix. I’m not exactly clear on the dates when she told me, but it was in Floriston at their house, the Phoenixes’ house and she explained to me that David Silverman had essentially acquired the cocaine business and that was where she was getting the coke from.
[575]*575It should be noted that Willard testified that this unrecorded extrajudicial hearsay statement was made by Pearl sometime prior to May 13, 1983. Furthermore, there is no evidence in the record from any witness who saw the person who furnished cocaine to Pearl on May 13, 1983, May 31, 1983, or June 25, 1983.
C. Evidence of Cab Rides
In an attempt to connect Silverman to the conspiracy, the Government offered evidence of cab rides taken by some person from the Van Nuys airport on May 13, 1983, May 31, 1983, and June 25, 1983. The general manager of the Valley Cab Co. testified that his business records showed that on May 13, 1983, a passenger was taken from the Van Nuys Airport to the intersection of Louise and Ventura, in Enci-no, California. The witness stated that this intersection is located in a commercial zone, approximately five miles from the airport. He further testified that his records disclosed that on May 31, 1983, a passenger was transported from the Van Nuys Airport to the intersection of Winnetka and Ventura, also a major commercial area. The witness stated that the distance between Louise and Winnetka on Ventura Boulevard is approximately six or seven miles. No evidence was introduced to prove that Pearl was the passenger in the cab on May 13 or May 31. The record is equally silent regarding whom, if anyone, the passenger contacted after exiting the cab at these two commercial locations.
The cab company’s business records also showed that on June 25, 1983, a passenger was transported from Van Nuys Airport to 22601 Waterbury. Other evidence established that David Silverman resided at 22601 Waterbury, Woodland Hills, California. The cab driver made an in-court identification of Pearl as the passenger on this occasion. The Government stipulated, however, that on July 21,1983, the Government had shown the driver a spread of twelve photographs, from which the driver identified another person as the passenger transported to 22601 Waterbury on June 25.
D. David Silverman’s Concealment of His Identity
The final piece of evidence relied upon by the Government to connect David Silver-man to the conspiracy was his evasive conduct when three agents of the Drug Enforcement Administration (DEA) called at his home. One of the DEA agents testified that on August 23,1983, at about 4:00 p.m., she and her fellow officers knocked on the door of the residence at 22601 Waterbury, Woodland Hills, California. David Silver-man opened the door in response. The officers identified themselves as DEA agents and stated that they wanted to ask David Silverman some questions. Although the DEA agents knew that a warrant for the arrest of David Silverman had been issued, they did not then disclose this information to him. The man at the door replied that David Silverman was not home. The DEA agents left a phone number, requesting that David Silverman be informed that he should contact one of them when he returned.
Soon thereafter, the DEA agents were advised through a radio transmission that someone at 22601 Waterbury had contacted the DEA office. The DEA agents returned to the residence. David Silverman again appeared at the door. He falsely identified himself, claiming to be Jim Walker. The DEA agents then, for the first time, disclosed “that there was a warrant for Mr. Silverman’s arrest.” The DEA agents then stated that David Silverman should contact the DEA as soon as possible. The record contains no evidence that the DEA agents ever informed David Silverman of the charges contained in the warrant or the relationship of the alleged crimes to his sister or to violations of the narcotics laws.
As the DEA agents were driving away from the area, their supervisor contacted them by radio and stated that an attorney had advised him that David Silverman was willing to turn himself in at a later date. David Silverman surrendered voluntarily two days later. As a result of his voluntary surrender, the district court reduced the bail by two-thirds.
[576]*576E. David Silverman’s Motion to Strike the Co-Conspirator’s Statements
At the close of the Government’s case-in-chief, David Silverman moved to strike the evidence of Pearl’s out-of-court statements, “on the grounds that the Government has failed to lay the foundation required by the Court.” David Silverman argued, inter alia, that the record contained no evidence independent of the statements themselves to connect him to the conspiracy.
The trial judge commented that he had “trouble” with “the proof of the conspiracy so far as David Silverman is concerned.” The trial judge pressed the prosecutor to identify the evidence connecting David Sil-verman to the conspiracy. In response, the prosecutor summarized the evidence discussed above. The trial judge stated that he would consider this “serious question” overnight and announce his ruling in the morning.
The next day, the trial judge denied David Silverman’s motion to strike the co-conspirator’s statements. The trial judge did not discuss the evidence on which he based his ruling. The trial judge explained: “All that is necessary is that there be independent proof that David Silverman had a slight connection to the conspiracy or some cases say slight evidence of a connection to the conspiracy was offered. By either test there is that much evidence. That is there is a slight connection shown and that’s about what it adds up.”
II. ANALYSIS
A. Admission of Co-conspirator’s Statements
Federal Rule of Evidence 801(d)(2)(E) provides: “A statement is not hearsay if ... [t]he statement is offered against a party and is ... a statement by a co-conspirator of a party during the course and in furtherance of the conspiracy.” Fed.R.Evid. 801(d)(2)(E). An accused’s knowledge of and participation in an alleged conspiracy are preliminary facts that must be established before extrajudicial statements of a co-conspirator can be introduced into evidence. Bourjaily v. United States, 483 U.S. 171, 107 S.Ct. 2775, 2778, 97 L.Ed.2d 144 (1987); United States v. Fleishman, 684 F.2d 1329, 1337 (9th Cir.), cert. denied, 459 U.S. 1044, 103 S.Ct. 464, 74 L.Ed.2d 614 (1982); United States v. Weaver, 594 F.2d 1272, 1274 (9th Cir.1979); United States v. Testa, 548 F.2d 847, 852 (9th Cir.1977); United States v. Ledesma, 499 F.2d 36, 40 (9th Cir.), cert. denied, 419 U.S. 1024, 95 S.Ct. 501, 42 L.Ed.2d 298 (1974). These preliminary facts must be shown by a preponderance of the evidence. Bourjaily, 107 S.Ct. at 2779.
Our standard of review is uncertain. Prior to the decision in Bourjaily, we reviewed de novo a district court’s determination that the Government had sufficiently established the factual predicate for admission of a co-conspirator’s statement. See United States v. Smith, 790 F.2d 789, 794 (9th Cir.1986) (whether Government has made requisite preliminary showing of conspiracy “is a question of law subject to de novo review”); United States v. Rosales, 584 F.2d 870, 872 (9th Cir.1978) (Wallace, J.) (whether Government has made requisite preliminary showing of conspiracy “is a question of law,” hence “we are not confined to the ‘clearly erroneous’ or some other restricted standard of review”).
The dissent cites Bourjaily for the proposition that “the district court’s conclusion that preliminary facts have been established by a preponderance of the evidence is reviewed for clear error.” Dissenting op. at 583; see id. at 585-586. The Bourjaily Court, however, did not address the issue of standard of review, nor did it unequivocally declare which standard is proper. See United States v. Gordon, 844 F.2d 1397, 1402 (9th Cir.1988) (“The appropriate standard of review ... was not an explicit holding in Bourjaily.”).
Under the de novo standard of review, we do not defer to the lower court’s ruling but freely consider the matter anew, as if no decision had been rendered below. Exner v. FBI, 612 F.2d 1202, 1209 (9th Cir.1980). Under the more deferential “clearly erroneous” standard, we must accept the lower court’s ruling unless, after reviewing the entire record, we are “left with the [577]*577definite and firm conviction that a mistake has been committed.” United States v. United States Gypsum Co., 333 U.S. 364, 395, 68 S.Ct. 525, 542, 92 L.Ed. 746 (1948), quoted in Edinburgh Assur. Co. v. R.L. Burns Corp., 669 F.2d 1259, 1261 (9th Cir.1982); Dollar Rent A Car, Inc. v. Travelers Indem. Co., 774 F.2d 1371, 1374 (9th Cir.1985).
We have carefully reviewed the record in this case. For the reasons discussed herein, we are left with the definite and firm conviction that the admission of the alleged co-conspirator’s statements in this case was a serious mistake, one that prejudiced the defendant. Our conviction requires us to reverse the district court’s ruling, whether that ruling is reviewed under the de novo or the “clearly erroneous” standard. For this reason, we need not, and do not, decide whether Bourjaily has effected a change in the standard of review heretofore applied in this circuit.
The Supreme Court ruled in Bourjaily that the plain meaning of Fed.R.Evid. 104(a) is that the district courts may consider the contested hearsay statements themselves, along with all other evidence, in determining whether the defendant had knowledge of and participated in the conspiracy. 107 S.Ct. at 2780. The Court explained: “To the extent that [the prohibition against bootstrapping set forth in Glasser v. United States, 315 U.S. 60, 62 S.Ct. 457, 86 L.Ed. 680 (1942) ] meant that courts could not look to the hearsay statements themselves for any purpose, it has clearly been superseded by Rule 104(a).” Id. 107 S.Ct. at 2782.
In Bourjaily, the contested hearsay statements offered by the Government to prove the preliminary facts were amply corroborated by other evidence. The co-conspirator in Bourjaily told an FBI informant that the defendant was involved in a conspiracy with the co-conspirator, that the defendant had agreed to buy and distribute a kilogram of cocaine, that the defendant would be in his car at a certain hotel parking lot at a certain time, that the co-conspirator would obtain the cocaine from the informant in the parking lot, and that the defendant would accept the cocaine from the co-conspirator. Id. at 2781. The co-conspirator’s statements were corroborated by defendant’s appearance at the designated time and place and by his acceptance of the cocaine. Id.
The Supreme Court held in Bourjaily that the trial court had not erred in considering the co-conspirator’s statements to determine whether the Government had established, by a preponderance of the evidence, the preliminary facts of the defendant’s knowledge of and participation in the alleged conspiracy. Id. at 2782. Because the contested statements were fully corroborated by evidence of defendant’s own actions, the Court found it unnecessary to decide “whether the courts below could have relied solely upon [the co-conspirator’s] hearsay statements to determine that a conspiracy had been established....” Id. at 2781-82 (emphasis added); see id. at 2791 (Blackmun, J., joined by Brennan and Marshall, JJ., dissenting) (“It is at least heartening ... to see that the Court reserves the question whether a co-conspirator’s statement alone, without any independent evidence, could establish the existence of a conspiracy and a defendant’s participation in it.”).
This court has answered the question left open in Bourjaily. We have ruled that á co-conspirator’s out-of-court statement, standing alone, is insufficient to establish that the defendant had knowledge of and participated in a particular conspiracy. See Gordon, 844 F.2d at 1402 (for co-conspirator statements to be admissible, “there must be some evidence, aside from the proffered statements, of the existence of the conspiracy and the defendant’s involvement”). To abandon the requirement that some evidence aside from the proffered co-conspirator’s statements be presented to show that the defendant knowingly participated in the alleged conspiracy would be to render all such statements self-validating. Such a ruling would “eliminate one of the few safeguards of reliability that this exemption from the hearsay definition possesses.” Bourjaily, 107 S.Ct. at 2784 (Blackmun, J., joined by Brennan and Marshall, JJ., dissenting).
[578]*578Accordingly, in this circuit, when the proponent of the co-conspirator’s statement offers no additional proof of defendant’s knowledge of and participation in the conspiracy, the statement must be excluded from evidence. Where, on the other hand, some additional proof is offered, the court must determine whether such proof, viewed in light of the co-conspirator’s statement itself, demonstrates by a preponderance of the evidence that defendant knew of and participated in the conspiracy.
In determining whether the proponent has made a showing sufficient to permit the introduction into evidence of the co-conspirator’s statement, the district court must bear in mind that out-of-court statements are presumptively unreliable. See Bourjaily, 107 S.Ct. at 2781. When the out-of-court statement is one made by a co-conspirator purporting to implicate others in an unlawful conspiracy, its reliability is doubly suspect. “[C]o-conspirator statements ... often have been considered to be somewhat unreliable. It has long been understood that such statements in some cases may constitute, at best, nothing more than the ‘idle chatter’ of a declarant or, at worst, malicious gossip.” Bourjaily, 107 S.Ct. at 2790 (Blackmun, J., joined by Brennan and Marshall, JJ., dissenting); accord Wong Sun v. United States, 371 U.S. 471, 490 n. 17, 83 S.Ct. 407, 419 n. 17, 9 L.Ed.2d 441 (1963) (quoting Williams, The Proof of Guilt 135 (1958)) (“ ‘Even where ... the evidence of an accomplice becomes admissible against his fellows, it remains suspect evidence, because of the tainted source from which it comes.’ ”); Davenport, The Confrontation Clause and the Co-Conspirator Exception in Criminal Prosecutions: A Functional Analysis, 85 Harv.L. Rev. 1378,1386-87 (1972) (statements made by a co-conspirator prior to termination of the conspiracy “may ... suffer from the same kinds of exclusively self-serving motives and possibly faulty memories that allegedly infect many post-termination statements”); Levie, Hearsay and Conspiracy: A Reexamination of the Co-Conspirators’ Exception to the Hearsay Rule, 52 Mich.L.Rev. 1159, 1165-66 (1954) (“The conspirator’s interest is likely to lie in misleading the listener into believing the conspiracy stronger with more members (and different members) and other aims than in fact it has.”).
Although, as Bourjaily instructs, Fed.R. Evid. 104(a) permits a trial judge to consider the co-conspirator’s out-of-court statement in assessing the statement’s admissibility, Rule 104(a) does not diminish the inherent unreliability of such a statement. Because of this presumptive unreliability, a co-conspirator’s statement implicating the defendant in the alleged conspiracy must be corroborated by fairly incriminating evidence. Evidence of wholly innocuous conduct or statements by the defendant will rarely be sufficiently corroborative of the co-conspirator’s statement to constitute proof, by a preponderance of the evidence, that the defendant knew of and participated in the conspiracy. Evidence of innocent conduct does little, if anything, to enhance the reliability of the co-conspirator’s statement. A co-conspirator’s statement, which is presumptively unreliable hence inadmissible standing alone, is no more reliable when coupled with evidence of conduct that is completely consistent with defendant’s unawareness of the conspiracy.
Bourjaily itself provides one example of the sort of incriminating evidence that sufficiently corroborates a co-conspirator’s statement to establish, by a preponderance of the evidence, defendant’s connection to the conspiracy. In Bourjaily, the evidence showed that the defendant had committed a criminal act that furthered the conspiracy described in the co-conspirator’s statement. See 107 S.Ct. at 2781. Our own cases provide similar examples. See, e.g., United States v. Crespo de Llano, 830 F.2d 1532, 1543 (9th Cir.1987) (defendant was present during negotiations for sale of cocaine, obtained sample for government undercover agent to taste, translated price of cocaine from Spanish to English, and appeared at prearranged location for the cocaine transaction); United States v. Paris, 827 F.2d 395, 400 (9th Cir.1987) (defendant met with intermediary just before latter provided government undercover agent with cocaine sample, and defendant arrived with one kilo[579]*579gram of cocaine at prearranged time and location for transaction).
Of course, evidence short of proof of the commission of a substantive offense may also be sufficient to show, by a preponderance of the evidence, the defendant’s knowing participation in the alleged conspiracy. See, e.g., United States v. Stewart, 770 F.2d 825, 831 (9th Cir.1985) (defendant was present at seller’s house immediately before each of three drug transactions, seller and defendant met immediately after two of the transactions, and defendant’s palm print was found on envelope that contained the drug), cert. denied, 474 U.S. 1103, 106 S.Ct. 888, 88 L.Ed.2d 922 (1986); United States v. Mason, 658 F.2d 1263, 1269 (9th Cir.1981) (defendant was the only person to visit seller between time seller telephoned his source to obtain contraband and time seller provided contraband to government undercover agents).
In the present case, by contrast, the evidence aside from the proffered co-conspirator’s statements is completely consistent with a conclusion that David Silverman was unaware of the conspiracy. The evidence is insufficiently corroborative of Pearl’s out-of-court statements to overcome the presumption of unreliability that makes those statements inadmissible standing alone.
According to Willard, Pearl told him that David Silverman was her cocaine source. In addition, on each trip to the Van Nuys airport, Pearl allegedly told Willard that she was going to call, or had called, an unspecified brother. Pearl also responded “Don’t worry” when Willard inquired whether her brother was “cool” concerning payment for cocaine.
Pearl’s statements are mutually corroborative only if one assumes, as the dissent apparently does, that each is independently reliable. See dissenting op. at 584. We submit that such assumption is erroneous. As explained above, a co-conspirator’s out-of-court statements are presumptively unreliable. One presumptively unreliable statement cannot be invoked to corroborate another, particularly when each was allegedly uttered by the same declar-ant.1
The admissibility of the contested statements, therefore, hinges on whether the additional evidence proffered by the Government to demonstrate David Silver-man’s connection to the conspiracy sufficiently corroborates the statements to overcome their presumed unreliability. We conclude that the additional evidence fails to provide sufficient corroboration.
Evidence that David Silverman drove his sister to the airport on one occasion makes only slightly more probable his connection to the conspiracy than do the hearsay statements alone. Such evidence shows little more than that he was in the presence of a relative who was involved in a conspiracy. That Pearl attempted to visit Silverman during one of her cocaine-buying expeditions is, likewise, only marginally probative of his involvement in the conspiracy, hence marginally corroborative of the contested statements. We have consistently recognized that evidence that a defendant merely associated with a member of a conspiracy has little probative value in demonstrating the defendant’s connection to that conspiracy. See, e.g., United States v. Weaver, 594 F.2d 1272, 1275 (9th Cir.1979) (evidence that defendant was passenger in truck and that wrapped package of cocaine was found partly under passenger’s seat did not constitute even “slight” evidence connecting defendant to alleged conspiracy); United States v. Griffin, 434 F.2d 978, 984 (9th Cir.1970) (quoting with approval United States v. Ragland, 375 F.2d 471, 476-77 (2d Cir.1967), cert. denied, 390 U.S. 925, 88 S.Ct. 860, 19 L.Ed.2d 987 (1968)) (“[A]n association with an alleged conspirator, without more, is insufficient to establish the necessary foundation for the admissibility of the incriminating [co-con[580]*580spirator’s] statements.”)) cert. denied, 402 U.S. 995, 91 S.Ct. 2170, 29 L.Ed.2d 160 (1971).
Although evidence of Pearl’s association with her brother David, viewed in light of Willard’s statement that Pearl told him that David was her source, makes the hearsay more reliable to some small degree, the evidence is simply too innocent to demonstrate David’s connection to the conspiracy by a preponderance of the evidence, i.e., to make the connection more likely than not. It is significant that the Government presented no evidence that David Silver-man was aware that Pearl delivered cocaine to Willard after Silverman dropped her off at the airport on June 25, 1983.
Likewise, evidence that David Silverman temporarily concealed his identity from the DEA does not sufficiently corroborate Pearl’s statements to prove, by a preponderance of the evidence, that he knew of or participated in the conspiracy with which he was charged. His concealment occurred two months after Pearl’s last trip to Van Nuys. As we explain in Part 11(B) below, this two-month delay, coupled with the absence of any showing by the Government that David Silverman was aware that he was suspected of involvement in any cocaine-related crime, renders any inference of guilt from such concealment improper.
In summary, we recognize that the Government proffered some additional evidence to corroborate Pearl’s contested extrajudicial statements. The district court characterized the additional evidence as “slight” but nevertheless found it sufficient to support admission of Pearl’s statements under Rule 801(d)(2)(E). We agree that the additional evidence is “slight,” if that, but disagree that the evidence supports admission of Pearl’s statements. We believe that the additional evidence proffered by the Government was so marginally corroborative that it failed to overcome the presumptive unreliability of Pearl’s statements. Thus, even when the additional evidence is assessed in light of those statements, a preponderance of the evidence fails to demonstrate that David Sil-verman knew of and participated in the alleged conspiracy. Accordingly, the district court erred in admitting Pearl’s extrajudicial statements identifying David Sil-verman as her cocaine source.
An error in the admission of evidence requires reversal only if the error affected a party’s substantial rights. See 28 U.S.C. § 2111 (1982) (appellate court shall give judgment without regard to errors that do not affect substantial rights of parties); United States v. Murray, 751 F.2d 1528, 1533 (9th Cir.) (“An erroneous evidentiary ruling will be reversed if a defendant shows that a substantial right has been affected.”), cert. denied, 474 U.S. 979, 106 S.Ct. 381, 88 L.Ed.2d 335 (1985). In the present case, Pearl’s contested statements were undoubtedly the bases for the jury’s conclusion that David Silverman was guilty of conspiracy. The district court’s error in admitting the statements, therefore, was necessarily prejudicial and compels reversal. See 11 C. Wright & A. Miller, Federal Practice and Procedure § 2885, at 289-90 (1973) (“[I]f the evidence is insufficient to support the verdict without the erroneously admitted evidence, the error must be held prejudicial.”) (footnote omitted).
B. The Modified Flight Instruction
Reversal on the ground of erroneous admission of the co-conspirator’s statements does not preclude retrial of David Silverman on Double Jeopardy grounds. See United States v. Harmon, 632 F.2d 812, 814 (9th Cir.1980) (per curiam) (Double Jeopardy Clause does not bar retrial after reversal for trial error). For the guidance of the Government, and the district court in the event of retrial, we next address the contention that the district court erred in instructing the jury that it might infer guilt from David Silverman’s concealment of his identity from the DEA agents who called at his home.2
[581]*581Flight instructions are valid only if there is evidence sufficient to support a chain of unbroken inferences from the defendant's behavior to the defendant's guilt of the crime charged. United States v. Feldman, 788 F.2d 544, 555 (9th Cir.1986), cert. denied; 479 U.S. 1067, 107 S.Ct. 955, 93 L.Ed.2d 1003 (1987). The Fifth Circuit has described this requirement clearly, explaining that four inferences must be justified: "(1) from the defendant's behavior to flight; (2) from flight to consciousness of guilt; (3) from consciousness of guilt to consciousness of guilt concerning the crime charged; and (4) from consciousness of guilt concerning the crime charged to actual guilt of the crime charged." United States v. Myers, 550 F.2d 1036, 1049 (5th Cir.1977), cert. denied, 439 U.S. 847, 99 S.Ct. 147, 58 L.Ed.2d 149 (1978). We have cited the Myers analysis with approval. See, e.g., Feldman, 788 F.2d at 555; United States v. Guerrero, 756 F.2d 1342, 1347 (9th Cir.), cert. denied, 469 U.S. 934, 105 S.Ct. 334, 83 L.Ed.2d 270 (1984).
The inference from proof of an unfocused consciousness of guilt to consciousness of guilt concerning the crime charged has proven especially problematic. Flight and concealment of identity can be consistent with innocence, or with guilt of misconduct unknown to the Government.3 Accordingly, we must evaluate flight instructions by looking for facts that support the inference from flight to a consciousness of guilt of the specific crime charged. For example, we consider whether the defendant knew the police suspected him of a particular crime. See United States v. 7'ille, 729 F.2d 615, 622 (9th Cir.) (upholding flight instruction where local newspaper had reported progress of police investigation and defendant had been carrying name and address of criminal defense attorney when arrested), cert. denied, 469 U.S. 845, 105 S.Ct. 156, 83 L.Ed.2d 93 & 848, 105 S.Ct. 164, 83 L.Ed.2d 100 (1984); United States v. Hernandez-Miranda, 601 F.2d 1104, 1107 (9th Cir.1979) (upholding flight instruction where defendant had been arraigned and had pIed guilty prior to fleeing and, therefore, knew about the charges against him). We also consider whether the defendant fled immediately after the crime. See Feldman, 788 F.2d at 555 (finding flight instruction improper where defendant's behavior was not immediate); Hernandez-Miranda, 601 F.2d at 1106 (stating that flight instructions should not be given unless flight was immediate or defendant knew about the charges against him); see also Myers, 550 F.2d at 1051 ("The immediacy requirement is important.... The more remote in time the alleged flight is from the commission or accusation of an offense, the greater the likelihood that it resulted from something other than feelings of guilt concerning that offense.").
Under the totality of the circumstances in the present case, we find that it was error to give an instruction on flight. David Silverman's concealment of his identity lacked sufficient connection to the criminal acts for which he was charged. Although we agree with the Government that it is reasonable to infer from the fact that David Silverman concealed his identity that he was conscious that he was suspected of some wrongdoing, the Government has offered no evidence from which it can be inferred that he was conscious of guilt [582]*582of any cocaine-related offense. There is no evidence in the record that David Silver-man was aware of his sister’s criminal conduct or that the DEA agents informed him during their visits that he was suspected of having committed any cocaine-related crime. For all the evidence shows, he might have been concealing his identity because he was conscious of having committed a drug-related offense unknown to the Government. Moreover, uncontradict-ed evidence suggests that David Silverman concealed his identity in order to make arrangements through his attorney to surrender voluntarily rather than face possible arrest at his residence. As noted above, his cooperation with the Government in surrendering voluntarily resulted in a two-thirds reduction in bail.
Further, David Silverman’s concealment of his identity occurred two months after Pearl’s last trip to Van Nuys and the last criminal act committed in furtherance of the alleged conspiracy.4 This two-month delay, coupled with the absence of any showing by the Government that David Silverman was aware of the nature of the charges against him at the time he concealed his identity, renders any inference of guilt from such concealment improper. See Feldman, 788 F.2d at 555; Hernandez-Miranda, 601 F.2d at 1106; United States v. White, 488 F.2d 660, 662 (8th Cir.1973) (flight instruction improper where “defendant was not advised of the crime ... charged ... at the time of his flight, the attempted arrest occurred over five months after the transaction charged, and there [was] no indication that defendant knew at the time of his flight that he was being sought for the crime charged”). Because the other nonhearsay evidence introduced against him was insufficient to connect him to a conspiracy, the instruction on flight was necessarily prejudicial.
III. CONCLUSION
We have concluded that the district court erred in admitting Pearl’s out-of-court statements implicating David Silverman in the alleged conspiracy under Fed.R.Evid. 801(d)(2)(E). The Government failed to present corroborative evidence sufficient to establish, by a preponderance of the evidence, the preliminary facts of Silverman’s knowledge of and participation in the conspiracy. Since the improperly admitted hearsay was the principal evidence that David Silverman was guilty of conspiracy, the court’s error in admitting the statements was prejudicial.
REVERSED.