Johnson tapped on the driver's window with a 9 mm pistol while Maxwell stood by the passenger door, prosecutors said. Johnson ordered Kosmos to get out of the car and hand over his money.

Kosmos tried to get away by reversing away from the suspects and then driving forward, prosecutors said. Johnson fired multiple shots through the windshield and passenger-side window.

He was hit once near the left side of his ribcage and was able to drive around to the front of his house, the state's attorney's office said. He got inside and his wife called 911 while the suspects ran away.

Kosmos was taken to the University of Chicago Medical Center, where he died during surgery, Mobley said. The Cook County medical examiner's office ruled his death a homicide.

Investigators used security footage to identify Maxwell and Johnson, prosecutors said. They were arrested about 12:30 am. Monday at Maxwell's home.

Johnson admitted to the shooting during interviews with police and identified himself in surveillance video from the area, according to prosecutors. Maxwell also allegedly admitted to going with Johnson to rob Kosmos.

Both men were ordered held without bail Wednesday on charges of first-degree murder and attempted aggravated vehicular hijacking, according to court records.