The Escalade had pulled up to a home in the 4400 block of North Lavergne Avenue shortly before 5 a.m. when the Mercedes rolled up behind it and someone inside opened fire, riddling the back windows and passenger side with bullets, according to Police News Affairs Officer John Mirabelli.
The Mercedes ran a red light at Nagle Avenue and collided with a Toyota van driven by a 29-year-old man, Mirabelli said. The four people inside the Mercedes, three men and a woman, left the SUV in the intersection and ran off. Two guns were recovered from it.
Meanwhile, the Cadillac stopped at a CVS store and asked someone there to call 911 for the wounded man. While there, the driver saw an ambulance headed to the accident scene and followed it, Mirabelli said.
The wounded man, 37, was taken in serious condition to Advocate Lutheran General Hospital, according to police. The driver of the van was taken to Resurrection Medical Center and treated for pain in his arms, police said.
Three people in the Escalade were being questioned by police. Mirabelli said the back passenger side windows and the back window were blown out by gunfire, and there were bullet holes on the back passenger side quarter panel.
Police said they were checking surveillance footage from a camera at Foster and Nagle.