A 17-year-old boy and two other males stole belongings from a 16-year-old girl at gunpoint around 7:50 p.m. in the 4500 block of South Woodlawn Avenue, police said.
Minutes later, they were traveling westbound in a stolen Kia in the 700 block of East 38th Place when they struck a Chicago police squad car that was traveling southbound on Cottage Grove Avenue, police said.
The stolen car then came to rest after striking a parked vehicle and the three occupants ran away in different directions.
Responding officers took all three into custody and a handgun was recovered from the scene. The 17-year-old was charged with armed robbery and criminal trespass to a vehicle.
Both officers in the squad car suffered non-life-threatening injuries and were taken to local hospitals for medical attention, police said.
Area One detectives are investigating.