Nearly 10 months after a deadly pre-dawn pileup on Interstate 57, a Park Forest man is now behind bars. Illinois State Police say 40-year-old Gregory Miles was arrested May 11, 2026, and is facing charges of leaving the scene of a fatal crash and failure to report a fatal crash. He is being held in the Cook County Jail as he waits for his first court appearance.
How the crash unfolded
The chain-reaction crash unfolded in the early morning hours of July 27, 2025, on southbound I-57 just north of Vollmer Road in Matteson. A stalled vehicle brought several people out onto the roadway, and one of them was sideswiped by a passing car. Moments later, that injured person and another bystander were hit by a second vehicle, shutting down the southbound lanes for hours while investigators worked the scene, according to CBS Chicago.
Investigation leads to arrest
After what state police describe as a lengthy investigation, detectives say they identified Miles as the driver of the first passing car involved in the incident and secured an arrest warrant. He was taken into custody on May 11 and charged with leaving the scene of a fatal crash and failing to report a fatal crash, the agency told FOX 32 Chicago. Miles was booked into the Cook County Jail, where he remains while waiting for an initial court appearance.
Victim identified
The Cook County Medical Examiner identified the person who died as 25-year-old Riley Vercher of Park Forest. Several people were taken to Franciscan Health Olympia Fields after the second impact, and one of them later died, according to CBS Chicago.
What the charges carry
Illinois law requires drivers involved in crashes that cause injury or death to stop, remain at the scene, and report the incident. Those duties are laid out in the Illinois Vehicle Code (625 ILCS 5/11-401). Failing to stop or to report can bring felony charges and steep penalties, and legal summaries note that leaving the scene of an injury crash or failing to report a fatal crash can bump the offense up to higher-class felonies with the possibility of years in prison. Full statutory language is available through the Illinois General Assembly, with a plain-language overview at RecordingLaw.
What's next
Miles remains in the Cook County Jail as he waits for his first court date, and prosecutors have not said whether they plan to pursue any additional charges. Illinois State Police say the investigation into the July crash is still active and are asking anyone with information to contact them, according to FOX 32 Chicago.
