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Illinois State Police Sergeant Charged With Sexual Assault of Tinley Park Bartender

Forensic and electronic records tie the sergeant to an alleged Aug. 2, 2025 incident with him jailed pending prosecution.

Overview

  • Prosecutors say a bartender woke confused in her car after a night out and has alleged that Douglas Lee, an Illinois State Police sergeant, incapacitated her and sexually assaulted her.
  • Investigators presented DNA from the waistband of the woman’s leggings, a hospital urine toxicology that showed THC, cocaine and barbiturates, surveillance video, license-plate reader data and credit-card and text records to support the charge.
  • Tinley Park detectives arrested Lee after a nearly yearlong probe, the Cook County Felony Review Unit approved the criminal sexual assault charge, and a judge denied his release at a recent hearing.
  • The Illinois State Police has placed Lee on administrative leave without pay and opened an internal investigation while the Cook County prosecution moves forward.
  • Court records show the woman had known Lee socially since early 2024 and note a separate dismissed 2005 accusation against him, and prosecutors say the case could prompt scrutiny of officer conduct and departmental oversight as it proceeds.