Rostraver police said they arrested a man his 60s accused of using a red flashing light to impersonate a law enforcement officer and pull people over.
Authorities said the incident happened Monday about 4:30 p.m. on Route 51.
According to police, the suspect was driving a black Chevy Blazer with a constable sticker on the dashboard and used a flashing red light to pull over a silver SUV.
A real Rostraver police officer drove by and knew something was wrong. The officer called for backup, and those two real police officers caught up with the man a few miles down the road and pulled him over.
The suspect told them he was a state constable and was conducting traffic stops, police said.
"He felt that he had or possessed specific powers and decided that he was going to initiate traffic stops," Rostraver police Lt. John Christner said.
Investigators said they ran a background check on the man, and he has no authority whatsoever.
Police said they're not sure if the man is a first-time offender or if he has pulled over other cars.
Officials said charges are pending, and police are asking the driver of the silver SUV and anyone else who might have information to come forward.