CHICAGO (AP) — A Chicago police officer was shot and injured Tuesday on the city's South Side, leading to a standoff between the suspect and dozens of heavily armed police officers.

Chicago Police Superintendent Garry McCarthy said the suspect, and possibly a second person, have been holed up in an apartment building in the Englewood neighborhood since the shooting.

McCarthy said the injuries suffered by the 29-year veteran police captain were not life threatening. A Stroger Hospital spokeswoman said the officer was in stable condition. McCarthy said the officer was surrounded by family members and was in "good spirits."

McCarthy said the officer, whom he didn't identify, suffered what he described as graze wounds to the head and chest.

"He's going to have a headache," McCarthy said outside the hospital. No other injuries have been reported.

McCarthy said the shooting suspect might be a man who is also wanted in Indianapolis, but that this has yet to be confirmed.

Indianapolis Metropolitan Police Lt. Chris Bailey said he was in contact with Chicago police and named the possible suspect as 42-year-old Daniel Brown. Bailey said an arrest warrant has been issued for Brown, who is charged in connection with three shootings in Indianapolis last week. Bailey said the motive for the shootings wasn't immediately known.

After the shooting in Chicago, dozens of heavily armed police officers descended on the area, evacuating residents from nearby homes and blocking off neighboring streets. Armored vehicles and officers carrying high-powered rifles surrounded the apartment building.

Commuters were affected by the shooting, which occurred at the end of the evening rush hour. Metra commuter rail service on its southwest line, which runs near the shooting scene, was shut down, forcing hundreds of commuters trying to get home to seek alternative means of transport. Chicago Transit Authority buses were also rerouted to avoid the scene.