Gunman sought after opening fire outside Medford pizza shop near Tufts University

Investigators are searching for a man who fired a gun early Friday morning outside a pizza shop in Medford, Massachusetts.

Surveillance video captured the terrifying incident playing out around 1 a.m. outside Pizza Days, just down the street from Tufts University.

The footage shows a large group of people in the parking lot, with one drawing a gun from his waistband and firing it. The crowd quickly fled.

Get top local stories in Boston delivered to you every morning. Sign up for NBC Boston’s News Headlines newsletter.

Two police cruisers were parked in the lot at the time. An officer can be seen pulling out a gun, but the gunman got away.

Police did not find any victims, and it is not believed anyone was hit.

Officers recovered a firearm and several shell casings. They reported hearing about eight gunshots.

Tufts officials say to their knowledge, no students were involved.

Police are trying to track down the gunman.