ABC7 obtained surveillance video of the shooting Monday.
At about 7:30 p.m. Sunday, the officer was with a group of people on the street in the 4600-block of North Kedzie when a confrontation started between the group and a passing dark-colored sedan, said Anthony Guglielmi, a spokesman for the Chicago Police Department.
Short time later, nonfatal GSW victim appears at area hospital. Security staff contact CPD & a weapon is found in hospital parking lot.— Anthony Guglielmi (@AJGuglielmi) January 16, 2017
The vehicle pulled into a McDonald's parking lot, drove around the drive-thru and returned to engage with the group, police said. A person in the vehicle brandished a weapon in the direction of the group and opened fire. That's when the off-duty sergeant in the group discharged his weapon at the armed person and the vehicle drove away.
Police said a man drove himself to a hospital a short time after the shooting. That person sustained a non-life threatening gunshot wound to the head.
Police confirmed Monday morning that the wounded person was involved in the shooting with the off-duty officer. A gun was recovered after police searched the area around the hospital.
The off-duty sergeant was not injured and neither was anyone in his group. He works in the 19th District and was placed on 30-day administrative leave.
The Independent Police Review Authority is investigating.