People v. Bass
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During a routine traffic stop, officers ran a name check on Bass, a passenger, which returned an investigative alert issued by the Chicago Police Department for an alleged sexual assault. Bass was arrested and made incriminating statements to investigators. The court denied a motion to suppress those statements and found him guilty of criminal sexual assault. The appellate court reversed, holding that the traffic stop violated the Fourth Amendment because it was unlawfully prolonged, that Illinois Constitution article I, section 6, provides greater protections than the Fourth Amendment, and that arrests based on investigative alerts, even those supported by probable cause, violate the Illinois Constitution.
The Illinois Supreme Court affirmed the reversal of Bass’s conviction, relying solely on the Fourth Amendment, without addressing investigatory alerts or the state constitution. The state failed to meet its burden of showing that the stop was not unlawfully prolonged. Officers cannot lawfully pursue unrelated investigations after quickly completing the mission by claiming that the overall duration of the stop (here, about eight minutes) remained reasonable, nor by waiting to resolve the mission (by writing a ticket or giving a verbal warning) until unrelated inquiries are completed. The name check was unrelated to resolving the red light violation; the officers resolved the traffic violation and then waited to issue the verbal warning so that they could engage in on-scene investigations into other crimes by checking names until they found something worth investigating.
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