AUBURN HILLS (WWJ) - An investigation is underway into a man suspected of impersonating a police officer in metro Detroit.

Auburn Hills police said they stopped a silver Dodge Charger along I-75, Tuesday morning, for illegal window tint and suspicious LED lights in the windows.

The 37-year-old Flat Rock man, who police said had numerous outstanding traffic warrants, was arrested for driving on a suspended license.

Searching the man's vehicle, officers discovered a Glock-style BB gun, a bullet-proof vest and a can of pepper spray. On the front of the vest there was a patch which states, “Michigan Police Attorney General.” Another reads: "Special agent."

(Photo: Auburn Hills police)

Further investigation with a warrant, police said, found the car had 360-degree red and blue lights and a functioning siren. The vehicle was seized by the Auburn Hills Police Department.

At this time, it's not clear if the man, whose name is not being released at this time, has been pulling people over.

"Essentially these are misdemeanor charges (he faces thus far)," Auburn Hills Police Lt. Ryan Gagnon said. "Unless he has acted in a manner as a peace officer, by stopping somebody or approaching somebody claiming he's a police officer, that's when it becomes serious and becomes a felony offense."

As the investigation continues, police want to hear from anyone who has had any encounters with this person on the road.

Anyone who has any information related to this suspect or the vehicle is asked to contact the Auburn Hills Police Department at 248-370-9460.