State v. Reiss, 326 P.3d 367

At ~1 a.m. Officer Ricky Ritter attempted to stop a blue pickup for driving without headlights; a red pickup driven by Reiss pulled over behind the blue truck and a van was also present.
Ritter intended to stop only the blue truck, activated emergency lights, and parked behind the three vehicles; Reiss exited his truck and approached Ritter’s squad car, demanding to know why he was stopped.
Ritter, concerned for safety, repeatedly ordered Reiss to return to his truck; Reiss complied and sat in the truck while Ritter called for backup and briefly attended to the blue truck.
After returning to Reiss, Ritter asked for identification; only after requesting documentation did Ritter notice slurred speech, bloodshot/droopy eyes, and an admission of drinking, then administered field sobriety tests and arrested Reiss for DUI.
The district court denied Reiss’s motion to suppress; the Court of Appeals affirmed, reasoning officer safety justified the brief detention and asking for ID was a minimal intrusion.
The Kansas Supreme Court reversed: it held the initial order to return to the truck was a permissible safety seizure, but Ritter’s continued detention when he requested ID (before noticing DUI indicators) constituted an investigative detention without reasonable suspicion, tainting subsequent evidence and requiring suppression.

Issue	Plaintiff's Argument	Defendant's Argument	Held
Whether Reiss was seized when ordered to return to his truck	Reiss: order was a show of authority causing a seizure	State: order was reasonable for officer safety and not a seizure	Seizure occurred when Reiss complied, but it was reasonable as a safety detention
Whether officer had reasonable suspicion to detain Reiss for DUI at time ID was requested	Reiss: no reasonable suspicion existed when ID was requested; evidence thereafter is tainted	State: reasonable suspicion existed by or before the time of investigative detention (appearance/behavior)	Court: no reasonable suspicion existed at the time ID was requested; the noticing of DUI indicators came only after ID request
Whether asking for ID during the safety detention was a minimal intrusion converting nothing into an investigatory stop	Reiss: request changed the encounter into an investigatory detention requiring reasonable suspicion	State: asking for ID was a minimal, safety-justified intrusion	Court: request for ID marked a transition to an investigative detention and was unsupported by reasonable suspicion
Remedy for evidence obtained after the unlawful investigative detention	Reiss: suppress subsequent DUI evidence as fruit of the poisonous tree	State: evidence should be admissible because detention was lawful or intrusion minimal	Court: exclude the tainted evidence, reverse conviction, remand for further proceedings

Wong Sun v. United States, 371 U.S. 471 (fruit-of-the-poisonous-tree exclusionary principle)
Terry v. Ohio, 392 U.S. 1 (investigative detention standard)
Maryland v. Wilson, 519 U.S. 408 (officer may order vehicle occupants out for safety)
Arizona v. Johnson, 555 U.S. 323 (officer safety during traffic stops can justify certain intrusions)
Brendlin v. California, 551 U.S. 249 (occupants of stopped vehicles are seized)
Brignoni-Ponce v. United States, 422 U.S. 873 (balancing public interest and liberty in stops)
State v. McGinnis, 290 Kan. 547 (Kansas standard on suppression and fruit-of-the-poisonous-tree)
State v. Thompson, 284 Kan. 763 (factors for determining consensual encounter versus seizure)