Robert Gross v. Chad Martinez, Christopher Ehlers, Nicholas Schoen, Tyler Rybczyk, Donald Furhop, and Matthew Giamanco

CourtDistrict Court, N.D. Illinois
DecidedMarch 30, 2026
Docket1:22-cv-06843
StatusUnknown

This text of Robert Gross v. Chad Martinez, Christopher Ehlers, Nicholas Schoen, Tyler Rybczyk, Donald Furhop, and Matthew Giamanco (Robert Gross v. Chad Martinez, Christopher Ehlers, Nicholas Schoen, Tyler Rybczyk, Donald Furhop, and Matthew Giamanco) is published on Counsel Stack Legal Research, covering District Court, N.D. Illinois primary law. Counsel Stack provides free access to over 12 million legal documents including statutes, case law, regulations, and constitutions.

Bluebook
Robert Gross v. Chad Martinez, Christopher Ehlers, Nicholas Schoen, Tyler Rybczyk, Donald Furhop, and Matthew Giamanco, (N.D. Ill. 2026).

Opinion

IN THE UNITED STATES DISTRICT COURT FOR THE NORTHERN DISTRICT OF ILLINOIS EASTERN DIVISION

ROBERT GROSS,

Plaintiff, No. 22-cv-06843 v. Judge John F. Kness CHAD MARTINEZ, CHRISTOPHER EHLERS, NICHOLAS SCHOEN, TYLER RYBCZYK, DONALD FURHOP, and MATTHEW GIAMANCO,

Defendants.

MEMORANDUM OPINION AND ORDER Plaintiff brought suit against six Illinois State Police troopers under Section 1983 after Defendants searched Plaintiff’s vehicle during a traffic stop. Plaintiff alleges that the search violated his rights under the Fourth Amendment because the initial traffic stop was unlawfully prolonged to permit a canine sniff. Defendants disagree and contend that summary judgment in their favor is appropriate. For the reasons that follow, the Court holds that the search of Plaintiff’s vehicle was reasonable. Accordingly, Defendants’ motion for summary judgment is granted. I. BACKGROUND While driving to work, Defendant Sgt. Chad Martinez, master sergeant for the Illinois State Police South Tristate Platoon (Dkt. 121 ¶ 4), observed a white Chrysler 300 with Arizona license plates that appeared to be speeding and changing lanes without signaling.1 (Id. ¶ 5.) After stopping the Chrysler, Sgt. Martinez noted two dogs in the back seat of the vehicle and a large plastic tarp zip-tied to the front headrests. (Id. ¶ 6.) Sgt. Martinez spoke with Plaintiff Robert Gross, who provided

his Michigan driver’s license and a copy of a rental agreement for the vehicle. (Id. ¶ 7.) Sgt. Martinez also observed food containers and trash in the passenger compartment. (Id. ¶ 8.) The parties agree that there were prescription pill bottles in the front of the vehicle, but they disagree about where exactly those pill bottles were located. (Id.) Plaintiff told Sgt. Martinez that Plaintiff had been driving from Colorado to Plaintiff’s home in Michigan since early that morning. (Id. ¶ 9.) Plaintiff

also told Sgt. Martinez that Plaintiff was skiing in Colorado, but Plaintiff did not appear to have skiing equipment in the vehicle. (Id. ¶ 13.) Sgt. Martinez found these observations odd. Based upon professional experience, Sgt. Martinez knew that Colorado was a source state for narcotics and that Michigan was a destination state. (Id. ¶ 10.) Sgt. Martinez likewise knew that I- 80 was a corridor for criminal activity, especially at night. (Id. ¶ 11.) Sgt. Martinez

was aware that dogs are generally not allowed in rental vehicles and that traffickers often use dogs to disrupt police canine operations. (Id. ¶ 12.) Sgt. Martinez further found the use of a tarp zip-tied to the headrests uncommon in a rented vehicle. (Id. ¶ 14.) Sgt. Martinez also found it odd that Plaintiff did not appear to have skiing equipment in the vehicle despite claiming to have gone skiing in Colorado. (Id. ¶ 13.)

1 Although Plaintiff disputes that he was actually speeding, the dispute is immaterial because the parties agree that the initial stop was lawful. (Dkt. 112 at 4.) Plaintiff accompanied Sgt. Martinez back to his squad car at around 10:38 p.m. (Id. ¶ 20.). Sgt. Martinez advised the Plaintiff that, if everything checked out, Plaintiff would receive some warnings and be allowed to continue traveling. (Id. ¶¶

16–17.) Sgt. Martinez was concerned that Plaintiff might be under the influence of drugs or alcohol given the erratic driving and late hour. (Id. ¶ 17.) Before entering the squad car, Sgt. Martinez asked if the Plaintiff was armed or had any “concealed carries,” and Plaintiff reported having a pocketknife but denied carrying any firearms. (Id. ¶¶ 18–19.) After entering the squad car, Sgt. Martinez began to put Plaintiff’s information into the requisite police databases for corroboration. (Dkt. 121 ¶ 23.) When Sgt.

Martinez asked Plaintiff whether he had any criminal history, Plaintiff disclosed previous charges for resisting arrest and battery on a police officer in New Mexico. (Id. ¶ 24.) Even after advising Plaintiff that he would only receive a warning, Sgt. Martinez noted signs of excessive nervousness in Plaintiff, such as rapid breathing and, when Sgt. Martinez asked about marijuana, turning to look at the rental vehicle. (Id. ¶¶ 35–41.) Plaintiff asserts that outward signs of nervousness abated when he

learned about the warnings; he further maintains that he did not immediately look toward the rental vehicle when Sgt. Martinez asked about marijuana. (Id.) Sgt. Martinez, conversely, noted that his professional training indicated signs of deceit such as fluttering eyes and personal grooming tics when he asked Plaintiff whether there were medications or large amounts of currency in the vehicle. Plaintiff does not dispute any of these facts. (Id. ¶ 42.) Sgt. Martinez asked Plaintiff for his consent to search the rental car; Plaintiff denied the request because he believed it was not germane to the traffic stop. (Id. ¶ 32–34.) Sgt. Martinez told Plaintiff that he believed Plaintiff was involved in “some

activity” and that he would be searching the vehicle without Plaintiff’s consent. (Id. ¶ 45.) Sgt. Martinez believed that a search was warranted based on (1) the one way rental between a source and destination state; (2) traveling with dogs; (3) the tarp in the back seat; (4) Plaintiff’s alleged nervousness; (5) deceitful answers regarding prescriptions; (6) traveling without stopping; (7) travelling at night; (8) knowledge of I-80 as a corridor for illegal activity; (9) a lack of ski equipment in the vehicle; (10) having hunting dogs in the vehicle without going hunting in Colorado; and (11) a

belief that Plaintiff was deceitful when asked about marijuana possession. (Dkt. 121 ¶46.) Sgt. Martinez deployed his canine partner and conducted a sweep of the exterior of the vehicle. (Id. ¶ 47.) Sgt. Martinez’s canine alerted to Plaintiff’s vehicle near the trunk. (Id. ¶¶ 47–48.) The canine sweep lasted less than one minute and was completed by 10:55 p.m. (Id. ¶ 49.) Sgt. Martinez obtained the car’s key fob and

advised Plaintiff that he would search the vehicle. (Id. ¶¶ 50–51.) Plaintiff objected due to the lack of a warrant, but Sgt. Martinez stated that one was not necessary. (Id. ¶¶ 51–52.) Sgt. Martinez also testified that he called for backup either before conducting the canine sweep or before initiating the search of Plaintiff’s vehicle. (Dkt. 105-3 at 43–44.) Sgt. Martinez began the search at the Chrysler’s trunk. (Id. ¶ 53.) Sgt. Martinez located several handguns in a red bag. (Id. ¶ 54.) Sgt. Martinez asked Plaintiff whether he had a gun permit and concealed carry license; Plaintiff produced both. (Id. ¶¶ 55–56.) Sgt. Martinez asked Plaintiff for the key to a large, locked case

found in the trunk, but Plaintiff refused to provide the key. (Id. ¶ 59.) Sgt. Martinez used bolt cutters to access the case and found several more handguns and hundreds of rounds of ammunition. (Id. ¶ 60.) Other officers arrived on scene to assist Sgt. Martinez. Sgt. Martinez asked Plaintiff to remove the dogs from the back seat so the search could continue. (Id. ¶ 62.) Trooper Schoen arrived, assisted in removing the dogs, and stood on the side of the road with Plaintiff while the search continued. (Id. ¶ 74.) Trooper Rybczyk also

arrived and assisted Sgt. Martinez with the search of the vehicle’s interior. (Id. ¶ 71.) Several weapons were recovered from the interior of the vehicle along with cannabis plant material. (Id. ¶¶ 30, 63–64.) Trooper Giamanco later arrived on scene (id. ¶¶ 72–73); Special Agent Ehlers arrived while Plaintiff was still on scene but did not participate in the search nor speak to the Plaintiff (id. ¶¶ 77–78); Trooper Furhop arrived on scene after Plaintiff pulled away (id. ¶ 79). Plaintiff left the scene at 12:08

a.m. after the search concluded (id. ¶¶ 67–68). II. STANDARD OF REVIEW Rule 56

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Robert Gross v. Chad Martinez, Christopher Ehlers, Nicholas Schoen, Tyler Rybczyk, Donald Furhop, and Matthew Giamanco, Counsel Stack Legal Research, https://law.counselstack.com/opinion/robert-gross-v-chad-martinez-christopher-ehlers-nicholas-schoen-tyler-ilnd-2026.