Two people were injured Thursday, including an Oak Forest police officer, following a carjacking in which the injured officer fired his gun at the fleeing vehicle, police said.

The carjacker, described as a male in his late teens or early 20s, was at large as of late Thursday, Oak Forest police said.

Shortly before noon, Oak Forest police were advised of an aggravated carjacking involving a gun that had taken place in Orland Park.

Oak Forest officers saw a vehicle matching the description traveling at a very high rate of speed east on 159th, and the vehicle attempted to turn north onto Cicero Avenue, where it hit a construction worker, police said.

The driver got out of the vehicle and fled on foot east on 159th, with Oak Forest officers in pursuit, police said.

The man carjacked a second vehicle, and as officers tried to apprehend him, he ran over one of the officers with the vehicle, who fired his weapon toward the stolen white Mazda, police said.

The officer was treated for a lower extremity injury and arm injury at a local hospital and later released, police said.

The construction worker was taken to Advocate Christ Medical Center in Oak Lawn in stable condition, police said.

A few minutes before the crash in Oak Forest, Orland Park police responded to a report of a carjacking in a restaurant parking lot in the 7800 block of 159th Street, in which a man armed with a handgun approached a male and female as they walked to their 2016 Dodge Charger, Orland Park police said.

The man demanded the woman’s purse and the keys to the vehicle then drove away east on 159th, police said.

mnolan@southtownstar.com

Twitter @mnolan_j