Zone 4 officers were dispatched to Allderice High School to take a report of a firearm found on private property near the school.
The loaded handgun was discovered by Pittsburgh Public School Police inside a Nike shoulder bag underneath a blue grocery bag on a driveway in the 2300 block of Pittock Street. The gun was secured by School Police and confirmed to be stolen.
Pittsburgh Police K9 officers conducted a sweep of the area with negative results for additional firearms or contraband.
Pittsburgh Police will be reviewing video provided by the school - as well as all available footage - as part of their investigation.
The firearm was sent to the Mobile Crime Unit to be processed.
The investigation is ongoing.