From City News Service:

LANCASTER — A deputy may have escaped death or serious injury when a fully-loaded machine gun pistol was fired twice before jamming during a routine traffic stop in Lancaster Saturday, a sheriff’s lieutenant said.
The suspect and another person drove away, but were eventually taken into custody
without incident. They were later identified as Christopher Orlando, 25 and Shayla Janelle Harper, 25, said Lt. Joanne Sharp of the sheriff’s Lancaster station in a news statement.
Orlando was identified as an ex-con out on parole and a gang member, but deputies were not sure if he or the woman fired the shots. There were no reports of injuries.
The shooting took place about 3:40 a.m. near 10th Street West at Jackman Street, several blocks west of Lancaster’s city center.
A deputy on routine patrol tried to pull over a vehicle that had no front license plate. As the deputy turned behind the vehicle to begin the the traffic stop, he heard one or two shots and saw a muzzle flash come from the vehicle and towards his vehicle, Sharp said
The deputy immediately broadcast over his radio that he been shot at by the suspect vehicle, which sped off and eluded the deputy. A containment area was set up in the immediate vicinity and the suspect vehicle was located shortly thereafter, she said.
A TEC-9 pistol was found on the corner where the shooting took place, Sharp said. The TEC-9 is a semi-automatic handgun that was designed as a machine gun. It was found to have a jammed round in the chamber, and Sharp said there was no evidence that any of the rounds hit any adjacent buildings.