Illinois State Police officials are investigating separate Chicago shootings by troopers in recent days.
The first was last Saturday on the South Side. Officials say troopers fired on a vehicle whose driver was trying to run a trooper over. Some of the shots hit the driver, a 15-year-old who allegedly had stolen the vehicle at gunpoint.
The second shooting was Thursday night in Chinatown, where a trooper injured two taxi passengers allegedly armed with a gun.
Unlike the Chicago Police Department, the Illinois State Police has no policy against firing at, or into, vehicles.