Just before 3:30 p.m., Pittsburgh Police from Zone 2 responded to the 900 block of Penn Avenue downtown for reports of shots fired.
Arriving units found shell casings and damage to the entranceway to Passport Academy Charter School. There were no victims located and no reported injuries.
At this time it is not known what led to the gunfire, but police detained two males who are being questioned in relation to the incident. The Mobile Crime Unit processed evidence at the scene.
The investigation is ongoing.