Prospect Heights police said its officers responded to the area of 79 East Palatine Frontage Road in Wheeling just after 9 a.m.
There, officers found the body of man on the ground along the fence.
He was identified as John Folan, 68 of Prospect Heights, according to the Cook County Medical Examiner.
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Police said Folan "may have been hit by a vehicle."
The video in the player above is from a previous report.
Police said there were no witnesses or vehicles that appeared to be connected to the possible crash.
No one is in custody.
The Prospect Heights Police Department asked anyone with information to call them at 847-398-5511.