A 20-year-old University of Michigan student suffered a broken jaw and had teeth knocked out when he was assaulted this morning at the Forest Street parking structure on South Forest Avenue, police said.

Detective Dave Monroe said the student was on the second floor of the structure at 2:30 a.m. when two men confronted him about urinating there.

One of the men then attacked him, Monroe said. They made a reference to the Marine Corps during the incident, Monroe said.

The victim was taken to an area hospital and remembered few details, Ann Arbor police Lt. Renee Bush said.

He was able to give police a description of his attacker: white, in his mid-20s, around 5 feet 6 inches tall, 145-150 pounds, with curly, blond hair, and was wearing a T-shirt and blue jeans.

Monroe said the attacker may have left in a red SUV or pickup truck.

Anyone with information can call police at (734) 794-6939.