Illinois State Police Investigating In-Custody Death in Oak Lawn
FOR IMMEDIATE RELEASE
July 24, 2026
July 24, 2026
OAK LAWN – The Oak Lawn Police Department requested the Illinois State Police (ISP) Public Integrity Task Force to investigate the death of a man in police custody.
On July 20, 2026, Oak Lawn Police Department officers arrested 43-year-old Johnall J. Walker of Lisle, IL for possession of a controlled substance. While enroute to the police department, Walker ingested an unknown substance and became unresponsive. Oak Lawn officers rendered aid to Walker before he was transported to a local hospital where he remained until July 22, 2026 when he was pronounced deceased.
ISP’s Public Integrity Task Force was subsequently contacted and will be conducting an independent investigation. No additional information is available at this time.
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