Pittsburgh Police responded to the 2600 block of Penn Avenue for a Shotspotter alert around 12:30 a.m.
When Zone 2 officers arrived, they were notified that a male gunshot victim was being taken to a local hospital by private vehicle.
Officers located the vehicle driven by an individual, with the victim in the back seat. He was listed as critical but stable.
The Mobile Crime Unit arrived and processed the scene.
The investigation is ongoing.