Authorities in California are looking for a police impersonator who reportedly stopped a driver and sexually assaulted her on Wednesday night.

According to CBS News, the suspect—described as a Hispanic, 30 to 40 years old, weighing 170 pounds with brown eyes and slicked-back black hair—pulled over the woman, asked for her driver's license and registration, then asked her to step out of the car.

It was at this point he reportedly sexually assaulted her.

The suspect was reportedly wearing a black short-sleeved uniform shirt with unknown patches on the sleeves and dark pants.

He remains at large.