Authorities said they found the body of a 31-year-old Prince George’s County man who was reported missing by his mother this month after he was last seen watching a football game.

A photographer saw the body Sunday afternoon washed up on rocks near the Chesapeake Bay in Point Lookout State Park in St. Mary’s County. Authorities later identified the body as that of Ashley Thompson of Oxon Hill, who was last seen Nov. 13. He had told his mother he was going out for a while after watching a football game.

Officials with the Maryland Natural Resources Police found an abandoned car at the Point Lookout park Nov. 15. They checked the license plate and also found the missing-person report for Thompson.

Candy Thomson, a spokeswoman for the Maryland Natural Resources Police, said Monday that the search lasted two days and involved police, K-9 units, divers and helicopters but that the man was not found.

On Sunday, the body was found “washed up on the rocks of the causeway,” Thomson said. Police recovered the body, and it was taken to the medical examiner for an autopsy.

The case is still under investigation and being transferred from the Maryland Natural Resources Police to Prince George’s County police.