Vacated and remanded by published opinion. Judge KEENAN wrote the majority opinion, in which Judge MOTZ joined. Judge DIAZ wrote a dissenting opinion.
OPINION
BARBARA MILANO KEENAN, Circuit Judge:
Joseph Edwards was convicted of one count of possession with intent to distribute cocaine base, in violation of 21 U.S.C. § 841. After the district court accepted Edwards’ conditional guilty plea, the court sentenced him to a term of 120 months’ imprisonment.
On appeal, Edwards contends that the district court erred in denying his motion to suppress evidence seized in the course of a police search of his person. The police search included an officer’s use of a knife to cut a sandwich baggie containing suspected narcotics off Edwards’ penis, an act performed at night on a public street. We conclude that the manner in which the search was conducted was unreasonable and, therefore, that the district court erred in denying Edwards’ motion to suppress. We vacate Edwards’ conviction and remand his case to the district court.
I.
On January 14, 2009 at 6:00 p.m., Shawnetta Layton and Vontraya Dixon went to the Northern District Police Station in Baltimore alleging that, four hours earlier, Layton’s ex-boyfriend, Joseph Edwards, had threatened them by brandishing a firearm. Upon receiving this complaint, the Baltimore City police officer who initially spoke with Layton advised Detective Dennis Bailey that Edwards had used a gun in a domestic assault, and that officers were in the process of obtaining a warrant for his arrest. Bailey was familiar with Edwards, and knew that Edwards had a criminal history involving the use or sale of illegal drugs.
[880]*880Bailey and three other officers immediately attempted to locate Edwards, canvassing the neighborhoods that Edwards was known to frequent. At 11:15 p.m., the officers observed Edwards walking on a residential street. Although it was dark outside, there was a street lamp that provided some light allowing the officers to identify Edwards.
After the officers stepped out of their vehicle, Bailey asked Edwards to approach them. Bailey testified that the officers and Edwards “calmly” approached each other, and that the officers “weren’t too worried,” because Edwards “looked like he was just walking down the street.” According to Bailey, Edwards did not exhibit any characteristics generally associated with an individual who is armed. He did not clutch at the waistband area of his pants, nor did the officers observe any “hand-to-hand” movements by Edwards that could have indicated the occurrence of a drug transaction. Bailey further testified that he did not have any information indicating that Edwards possessed any drugs at that time.
The officers detained Edwards and placed handcuffs on him, securing his arms behind his back.1 Bailey testified that the officers placed Edwards in handcuffs to ensure their safety, based on their belief that Edwards might be armed. As Bailey contacted an employee at the police station to confirm that an arrest warrant had been executed, Edwards was seated on a curb. After being informed that the arrest warrant had been signed, Bailey told Edwards that he was under arrest.
Bailey requested a police transport van to take Edwards to the police station and, while waiting for the van to arrive, Bailey conducted a pat-down search of Edwards. Bailey testified that during the pat-down, he checked everywhere on Edwards’ person where a weapon could be stored. Bailey did not find any weapons or contraband during the pat-down, nor did he feel any objects indicating that Edwards may be armed.
When the transport van arrived, the officers decided to search Edwards a second time before placing him into the van. While Bailey and three other male officers surrounded Edwards, Bailey unfastened Edwards’ belt, loosened it, and pulled Edwards’ pants and underwear six or seven inches away from his body.2 The officers directed a flashlight beam inside both the front and the back of Edwards’ underwear.
As they were looking inside Edwards’ underwear, the officers saw that there was a plastic sandwich baggie tied in a knot around Edwards’ penis. From Bailey’s vantage point and with the assistance of the flashlight beam, Bailey could also see that the sandwich baggie contained smaller blue ziplock baggies, which contained “a white rocklike substance.”3 Based on his training and experience, Bailey concluded that the baggie and its contents were consistent with the packaging or distribution of a controlled substance.
[881]*881Upon discovering the sandwich baggie tied around Edwards’ penis, another officer held Edwards’ pants and underwear open while Bailey put on gloves, took a knife that he had in his possession, and cut the sandwich baggie off Edwards’ penis with the knife.4 After Bailey cut the baggie, he reached into Edwards’ underwear and removed the baggie and its contents. During this procedure, Edwards remained in handcuffs with his hands secured behind his back.
Bailey testified that there were several reasons he conducted this second search before placing Edwards into the police van. Bailey stated that “[a] complete search is always your best option,” because often “people hide things in those areas.” Bailey also stated that because Edwards was being arrested for a handgun violation, Bailey thought that a more extensive search was warranted to ensure the safety of the officers, including the driver of the transport van. Finally, Bailey testified that he was aware of Edwards’ criminal history, including that he previously had been arrested on drug charges. When asked whether it was customary for officers in Baltimore to search inside the underwear of arrestees, Bailey testified that “it’s about 50 percent of the time, because nobody likes to do that search. You know, it’s unpleasant for everybody involved. But if you have reason to believe that there might be something, then it’s a good idea to check, because often they do hide things down there.”
The officers conducted this search inside Edwards’ underwear in the middle of the street beside the police transport van. Although Edwards was searched at 11:30 p.m., a streetlight partially illuminated the area. All four officers, each of whom was male, saw the drugs being removed from inside Edwards’ underwear, but the district court found that only two officers, including Bailey, saw Edwards’ penis during the course of the search.
Ashley Keller, a nearby resident who had known Edwards for many years, was standing at her doorway and saw Edwards being searched by the officers. She observed that the officers “patted [him] down mostly,” and were “rambling with” and “feeling around” his pants. Keller noticed that Edwards’ pants were lower than usual, but she could not see his genitals or his underwear.
Edwards ultimately was charged in a single-count indictment with possession with the intent to distribute cocaine base, in violation of 21 U.S.C. § 841. Edwards moved to suppress the evidence, arguing that the officers’ search inside his underwear was unreasonable under the Fourth Amendment.
After a lengthy evidentiary hearing, the district court denied Edwards’ motion. The district court found that Edwards’ pants were only pulled out, not down, and that no members of the public were in a position to have seen Edwards’ underwear or genitals. The district court concluded that the search was reasonable under the Fourth Amendment.
Edwards entered a conditional guilty plea to the charge, reserving the right to appeal the district court’s ruling denying his motion to suppress. After the district court accepted Edwards’ plea and imposed sentence on him, Edwards timely filed this appeal.
II.
Edwards argues that the district court erred in denying his motion to sup[882]*882press, because the search conducted inside his underwear was unreasonable under the Fourth Amendment. We review a district court’s factual findings underlying a motion to suppress for clear error, and the court’s legal determinations de novo. United States v. Wardrick, 350 F.3d 446, 451 (4th Cir.2003). When a motion to suppress has been denied, we review the evidence in the light most favorable to the government. United States v. Hamlin, 319 F.3d 666, 671 (4th Cir.2003).
We first address the preliminary question whether Edwards was subjected to a strip search. The government argues that the search conducted by the police was not a strip search but merely was a search of Edwards’ “dip,” or waistband, area. We disagree with the government’s argument.
We conclude that the search conducted inside Edwards’ underwear is properly characterized as a strip search, which includes “the exposure of a person’s naked body for the purpose of a visual or physical examination.” Amaechi v. West, 237 F.3d 356, 363 (4th Cir.2001). A movement of clothing to facilitate the visual inspection of a suspect’s naked body, as occurred here, is a standard example of a strip search. See Edgerly v. City and Cnty. of San Francisco, 599 F.3d 946, 957-58 (9th Cir.2010); Kelsey v. Cnty. of Schoharie, 567 F.3d 54, 62 (2d Cir.2009); Blackburn v. Snow, 111 F.2d 556, 561 n. 3 (1st Cir.1985). A suspect need not have been fully undressed for the search to have characteristics of, or be treated as, a strip search. See Amaechi, 237 F.3d at 363; United States v. Dorlouis, 107 F.3d 248, 256 (4th Cir.1997) (treating officer’s act of pulling down suspect’s trousers, without removing suspect’s boxer shorts, as strip search); see also Wood v. Hancock Cnty. Sheriff’s Dep’t, 354 F.3d 57, 63 n. 10 (1st Cir.2003) (recognizing that “a strip search may occur even when an inmate is not fully disrobed”).
We also find instructive the Supreme Court’s recent characterization of a strip search in Safford Unified School District No. 1 v. Redding, 557 U.S. 364, 129 S.Ct. 2633, 174 L.Ed.2d 354 (2009). The Court held that a school official’s order that a student “remove her clothes down to her underwear, and then ‘pull out’ her bra and the elastic band on her underpants .... in the presence of the two officials who were able to see her necessarily exposed breasts and pelvic area to some degree,” constituted a search that could be fairly called a “strip search.” Id. at 2641; see also Edgerly, 599 F.3d at 957-58 n. 16 (discussing Redding).
The manner and scope of the search at issue in Redding, like the search we consider in the present case, resulted in the pulling outward of the suspect’s underwear, and the exposure of the suspect’s pelvic area. Although this case presents certain factual differences from the search at issue in Redding, the many similarities in the manner in which the searches were conducted further supports our conclusion that the police officers in the present case conducted a strip search of Edwards’ person.
III.
We apply well-settled principles of constitutional law in considering the reasonableness of the search of Edwards’ genital area. Most notably, the very text of the Fourth Amendment expressly imposes the requirement that all searches and seizures be reasonable. Kentucky v. King, — U.S. -, 131 S.Ct. 1849, 1856, 179 L.Ed.2d 865 (2011).
An officer may search the person of an arrestee, and the area within the arrestee’s immediate control, without a [883]*883search warrant based on the need to disarm the arrestee and to discover evidence. Illinois v. Lafayette, 462 U.S. 640, 644-45, 103 S.Ct. 2605, 77 L.Ed.2d 65 (1983). However, all searches, including searches incident to an arrest, must be reasonable to withstand Fourth Amendment scrutiny. Amaechi, 237 F.3d at 361.
We further observe that the Supreme Court’s analysis in Bell v. Wolfish, 441 U.S. 520, 559, 99 S.Ct. 1861, 60 L.Ed.2d 447 (1979) is material to our resolution of this case. In Bell, the Supreme Court developed “a flexible test” to determine the reasonableness of a broad range of “sexually invasive searches,” which included but was not limited to strip searches. Amaechi, 237 F.3d at 361 n. 11 & 364 n. 14 (citing Bell, 441 U.S. 520, 99 S.Ct. 1861); see also BNSF Ry. Co. v. U.S. Dep’t of Transp., 566 F.3d 200, 208 (D.C.Cir.2009) (noting that “the balancing inquiry remains the same” irrespective whether search is labeled as a strip search, or merely as a search). Therefore, we employ the reasonableness test set forth in Bell, because Edwards was subjected to a search that falls within that broad category of “sexually invasive searches.”
IV.
Under the Bell framework for determining the reasonableness of sexually invasive searches, the need for a particular search is balanced against the invasion of personal rights caused by the search. 441 U.S. at 559, 99 S.Ct. 1861. Pursuant to Bell, we examine the search in its complete context and consider the following factors: 1) the place in which the search was conducted; 2) the scope of the particular intrusion; 3) the manner in which the search was conducted; and 4) the justification for initiating the search. Id.
We first consider the location of the search. The question whether a sexually invasive search is conducted in a private or a public setting is “especially relevant” to this Court’s determination of reasonableness. Polk v. Montgomery Cnty., 782 F.2d 1196, 1201-02 (4th Cir.1986).
We have “repeatedly emphasized the necessity of conducting a strip search in private.” Amaechi, 237 F.3d at 364. While every strip search need not be conducted in a private holding cell to adequately safeguard a suspect’s privacy interests, we consider whether a sexually invasive search could have been viewed by others, and whether it was in fact viewed by others, in our analysis of the reasonableness of the search. See Logan v. Shealy, 660 F.2d 1007, 1014 (4th Cir.1981).
Because Bailey conducted the strip search of Edwards in the middle of a public, residential street, the search could have been viewed by others and, thus, was not conducted in a private setting. However, based on our conclusion that other factors of the Bell test are determinative of this appeal, we do not address whether the location of the search affected its reasonableness.
Under Bell, the reasonableness of the search also depends on the scope of the particular intrusion and the manner in which the search was conducted. Bell, 441 U.S. at 559, 99 S.Ct. 1861; Amaechi 237 F.3d at 361. Edwards contends that the scope of the intrusion was extensive because the officers inspected his genitals. Edwards further maintains that the manner in which the search was conducted was unreasonable, because Bailey cut the sandwich baggie off Edwards’ penis with a knife while Edwards was restrained in handcuffs, an act that could only cause fear and humiliation.
[884]*884In response, the government argues that the scope and manner of the search were reasonable, because Edwards’ pants and underwear were only pulled out, rather than down, and the officers did not conduct a visual or physical examination of Edwards’ body cavities. We disagree with the government’s position, because the drugs were removed from Edwards’ person in an unnecessarily dangerous, and thus unreasonable, manner.
The manner in which contraband is removed from a suspect during a sexually intrusive search, no less than the manner in which the contraband initially is discovered, must be considered in determining under the Bell analysis whether the search was reasonable.5 Bell, 441 U.S. at 559-60, 99 S.Ct. 1861; see United States v. Hambrick, 630 F.3d 742, 748 (8th Cir.2011); United States v. Williams, 477 F.3d 974, 975-76 (8th Cir.2007). Thus, the reasonableness of a sexually intrusive search depends in part on the manner in which the search was conducted and the consideration given to the privacy interests of the suspect. See Lafayette, 462 U.S. at 645, 103 S.Ct. 2605; United States v. Ashley, 37 F.3d 678, 681-82 (D.C.Cir.1994).
The safety of the suspect must be considered as well. A search that is theoretically permissible in one context may be impermissible in another if it is conducted in a cruel, painful, or dangerous manner. See United States v. Braks, 842 F.2d 509, 511-13 (1st Cir.1988) (considering “whether the type of search exposes the suspect to pain or danger,” in court’s analysis of invasiveness of search, and upholding search in part because it did not result in “pain or danger” to defendant); United States v. Sandler, 644 F.2d 1163, 1167 (5th Cir.1981) (en banc) (considering whether search was painful or dangerous in analyzing invasiveness of search).
We further observe that, in fashioning the Bell test, the Supreme Court cited its decision in Schmerber v. California, 384 U.S. 757, 86 S.Ct. 1826, 16 L.Ed.2d 908 (1966). Bell, 441 U.S. at 559, 99 S.Ct. 1861. In Schmerber, the Court held reasonable a search drawing blood from the body of a suspect charged with driving under the influence of alcohol, and relied in part on the fact that the procedure involved “virtually no risk, trauma, or pain,” and did not raise any concerns regarding the suspect’s “fear” or “health.” 384 U.S. at 771-72, 86 S.Ct. 1826. Thus, we conclude from the Supreme Court’s analysis in Bell that these factors discussed in Schmerber also are relevant in considering the reasonableness of the man[885]*885ner in which a sexually invasive search is conducted.
Other courts also have emphasized that sexually invasive searches are not to be conducted in a manner likely to instill fear in the suspect. See Evans v. Stephens, 407 F.3d 1272, 1281 (11th Cir.2005) (en banc); cf. Richmond v. City of Brooklyn Ctr., 490 F.3d 1002, 1008 (8th Cir.2007) (strip searches should be hygienic, and should not be performed in degrading, humiliating, or abusive fashion). In view of the above authorities, we conclude that once contraband is discovered in the course of a sexually invasive search, the contraband may not be seized in a manner that poses an unnecessary risk of harm to the person being searched.
The facts of the present case show that during the course of the search, Edwards’ hands were restrained in handcuffs behind his back as they had been since the officers first detained him. When Bailey discovered the sandwich baggie containing suspected contraband tied to Edwards’ penis, Bailey dropped his flashlight, obtained a knife, and put on gloves, while another officer continued to hold open Edwards’ pants and underwear. Without the aid of the flashlight, Bailey took the knife and cut the sandwich baggie off Edwards’ penis.
We conclude that Bailey’s use of a knife in cutting the sandwich baggie off Edwards’ penis posed a significant and an unnecessary risk of injury to Edwards, transgressing well-settled standards of reasonableness. The fortuity that Edwards was not injured in the course of this action does not substantiate its safety. The district court found that the entire search took place at “approximately 11:30 [at night], in a dark area.” While the officers used a flashlight when searching inside Edwards’ underwear, they did not continue to use the flashlight when Bailey removed the baggie containing the suspected drugs with his knife.
The government argues, nonetheless, that the additional factor in the Bell analysis, the justification for the search, establishes that the search was reasonable. See 441 U.S. at 559, 99 S.Ct. 1861. The government contends that because Bailey knew that Edwards was being arrested for a handgun violation, the search inside Edwards’ underwear was reasonable to ensure that the police had not missed finding a weapon during the earlier pat-down search.
We conclude that the government’s rationale is not persuasive because it effectively asks that we validate the entire search, irrespective of the actions that transpired during its course, based on the initial justification for the search. We are not permitted, however, to disregard conduct that occurs after a search has begun in our evaluation of the constitutional validity of that search. See Bell, 441 U.S. at 559-60, 99 S.Ct. 1861. Moreover, assuming, without deciding, that the government’s rationale supports the reasonableness of the decision to search inside Edwards’ underwear, this rationale does not justify the dangerous manner in which the contraband was retrieved from his genital area once the contraband was discovered. In fact, the government provides no reason whatsoever why the concealed contraband, once the police had determined that it clearly was not a handgun, could not have been removed under circumstances less dangerous to Edwards.
We do not suggest that after discovering contraband concealed under a suspect’s clothing, officers are required to permit the suspect to remove the contraband. Such a result very well could undermine the police objectives of preserving the evidence and maintaining the safety of [886]*886the officers at the scene. See United States v. Thornton, 325 F.3d 189, 192 (4th Cir.2003) (observing that officer’s safety “might well be endangered” and that evidence could be concealed or destroyed if officer cannot conduct search incident to arrest) (quoting Chimel v. California, 395 U.S. 752, 763, 89 S.Ct. 2034, 23 L.Ed.2d 685 (1969)). As the Eighth Circuit has noted, “[s]ome physical contact is permissible, and indeed unavoidable, when police reach into a suspect’s pants to remove drugs the suspect has chosen to hide there.” Williams, 477 F.3d at 976.
Manifestly, in the present case, there were several alternatives available to the officers for removing the baggie from Edwards’ penis, which neither would have compromised the officers’ safety nor the safety of Edwards. These alternatives included untying the baggie, removing it by hand, tearing the baggie,6 requesting that blunt scissors be brought to the scene to remove the baggie, or removing the baggie by other non-dangerous means in any private, well-lit area. Thus, we conclude that, in the absence of exigent circumstances, the right of the police to seize contraband from inside Edwards’ underwear did not give the officers license to employ a method creating a significant and unnecessary risk of injury.
The government here expressly has disavowed reliance on any theory of exigent circumstances to support the removal of the contraband from Edwards’ penis by use of a knife. Thus, the lack of any justification for using the knife in this manner defeats the government’s argument that the search inside Edwards’ underwear was reasonable, and requires that the evidence be excluded.
We further observe that application of the exclusionary rule is especially appropriate in this case. The “sole purpose” of the exclusionary rule “is to deter future Fourth Amendment violations.” Davis v. United States, — U.S. -, 131 S.Ct. 2419, 2426, 180 L.Ed.2d 285 (2011). As the Supreme Court explained in Herring v. United States, 555 U.S. 135, 144, 129 S.Ct. 695, 172 L.Ed.2d 496 (2009), “the exclusionary rule serves to deter deliberate, reckless, or grossly negligent conduct, or in some circumstances recurring or systemic negligence.” The facts and circumstances before us demonstrate conduct plainly within the purposes of the exclusionary rule.
First, the circumstances under which Edwards was searched are likely to recur. Indeed, the evidence in this case showed that Baltimore City police officers conduct searches inside the underwear of about 50 percent of arrestees, in the same general manner as the strip search performed on Edwards.7 Second, we cannot discount the real possibility that a suspect may suffer injuries when a knife is employed, even when it is used to remove contraband [887]*887from the suspect’s genitals in a well-lit and private setting.
Third, the interests of deterrence further are advanced by discouraging the routine use of dangerous procedures of this type when, as here, the officers were not operating under any exigency. And, a decision excluding the evidence in this case would not burden the police officers with responsibility for the judgment errors of others. Cf. Davis, 131 S.Ct. at 2428-29 (citing United States v. Leon, 468 U.S. 897, 922, 104 S.Ct. 3405, 82 L.Ed.2d 677 (1984) (officers reasonably relied on a warrant later held to be invalid); Arizona v. Evans, 514 U.S. 1, 14, 115 S.Ct. 1185, 131 L.Ed.2d 34 (1995) (officers reasonably relied on erroneous information concerning an arrest warrant)).
Based on the record before us, we decline to apply a “but-for” causation analysis to consider admissibility of the evidence on the separate ground that the constitutional violation was not the actual cause of the discovery of the evidence. See Segura v. United States, 468 U.S. 796, 815, 104 S.Ct. 3380, 82 L.Ed.2d 599 (1984). The government did not make this argument either in the district court or before this Court. Thus, we will not consider the merits of that argument here. See Jones v. Comm’r, 642 F.3d 459, 466 (4th Cir.2011) (citing Muth v. United States, 1 F.3d 246, 250 (4th Cir.1993)) (issues raised for first time on appeal generally will not be considered); see also United States v. Powell, 666 F.3d 180, 185 n. 4 (4th Cir.2011) (“By not presenting any of these arguments in its appellate brief’ that were raised below in support of the lawfulness of an officer’s search of a suspect, “the Government has abandoned them.”).
We also observe that the government has failed to raise an “inevitable discovery” argument for our consideration in this case. It is the government’s burden to prove inevitable discovery, United States v. Allen, 159 F.3d 832, 838 (4th Cir.1998) (quoting Nix v. Williams, 467 U.S. 431, 444, 104 S.Ct. 2501, 81 L.Ed.2d 377 (1984)), and, as the government conceded at oral argument in this case, the government did not advance an inevitable discovery argument either before the district court or on appeal. See Jones, 642 F.3d at 466; Powell, 666 F.3d at 185 n. 4. Thus, we will not consider that issue here.
In view of these considerations, we hold that, under the Bell analysis, and in the absence of argument raised by the government supporting admission of the evidence on other grounds, the evidence unlawfully seized from Edwards’ person is subject to exclusion. Accordingly, we conclude that the district court erred in denying Edwards’ motion to suppress.
V.
For these reasons, we vacate the district court’s judgment and remand the case for further proceedings.
VACATED AND REMANDED