Oak Harbor police are reviewing a video in hopes of identify a man who punched a convenience store clerk in the head and stole an 18-pack of Bud Light early Thursday morning.

Police Chief Rick Wallace said the suspect tried to buy the beer at the 7-Eleven store on the south end of the city at about 2:15 a.m. When the clerk told him he couldn’t legally sell alcohol after 2 o’clock, the man became angry and hit the clerk on the side of the head, then left with the beer.

Wallace said the clerk wasn’t injured in the assault. But the beer-drinking customer could be arrested on suspicion of second-degree robbery.

The store has a surveillance camera, Wallace said, and officers retrieved the video recording.

According to the 911 log, the clerk described the suspect as a white man, possibly in his early 20s and about 5 foot, 10 inches tall. He had a thin beard, short hair and a muscular build. He was wearing a white, knitted sweater.