Columbus police had an unexpected complication as they worked at the scene of a fatal accident Saturday night — a driver plowing into the back of a patrol car.

The police car, with its emergency lights activated, was blocking traffic on State Road 46 at about 9:45 p.m. Saturday night, when the car was struck in the rear.  Police say that 22-year-old Jacob D. Voelker,of Sidney, Ohio, was driving the vehicle that crashed and as he spoke to officers after the accident, they noticed that he had glassy eyes and smelled of alcohol, says Lt. Matt Harris, spokesman for the police department.

After being treated for injuries at Columbus Regional Hospital, he was arrested on a preliminary charge of operating a vehicle while intoxicated with endangerment.