Authorities found the bodies of two men Sunday after their boat overturned in the Potomac River in Charles County.

Officials received a call just after noon that a 15-foot bass boat had capsized near the mouth of Mattawoman Creek, said Candy Thomson, a spokeswoman for the Maryland Natural Resources Police.

Witnesses saw two men in the water near the boat. Authorities recovered the boat, but couldn’t immediately find the men. Officials reported shortly after 4 p.m. that they had recovered the body of one of the men, and said about two hours later that the second body had also been found.

The Coast Guard and the Charles County fire department were among agencies that took part in the search.

With the water temperature near 50 degrees and wind gusting to 20 mph, “searching conditions are really horrible,” Thomson said.

Responders used underwater sonar in the effort, which, according to Thomson, raced the clock as conditions deteriorated.

Authorities believe the men may have launched their boat from nearby Smallwood State Park.

This story has been updated.