The death of Renaldo Riggins, 23, of Park Forest, Illinois, was ruled a homicide by the Lake County coroner.
Police said the man might have been pushed out of a vehicle where he was found, stating that the vehicle involved might have been a silver Toyota Camry.
Two men were shot and killed Friday night in separate incidents at homes in a Ford Heights, Illinois, subdivision just north of U.S. 30 and west of Illinois 394.
Jason Peden, 35, was charged with attempted murder on Monday.
Torra Johnson, 42, faces charges of aggravated battery, aggravated battery with a deadly weapon and aggravated battery to a police officer.
Frederick Keys 45, of Ford Heights, faces charges of attempted murder, aggravated battery with a firearm and unlawful use of a weapon by a felon.
Police arrived at the store to find a 25-year-old man suffering from three gunshot wounds in his legs and hand.
Two men and a woman were hospitalized after the shooting early Saturday.
The Illinois Department of Public Health will offer COVID-19 testing at sites in Blue Island and Ford Heights this weekend.
The man was transported to a local hospital after the crash and later died from his injuries, police said.
Police say a Chicago Heights man treated for a gunshot wound at a Dyer hospital is facing charges of murder and home invasion for his role in a shootout Tuesday at a home in Ford Heights, Illinois.