The U.S. Coast Guard on Saturday suspended its three-day search for missing Olympic sailor Trevor Moore.
"Our thoughts and prayers go out to the loved ones affected," Coast Guard Capt. Michael Long said in a statement. "Despite the tireless search efforts by multiple agencies and good Samaritans, we were unable to find Mr. Moore."
Moore, a member of the 2012 U.S. Olympic sailing team, was reported missing Thursday after his 16-foot boat was found in a Miami marina with the engine still running and his possessions on board, but the 30-year-old was nowhere to be seen.
The boat was found at Dinner Key Marina at around 6 p.m. Thursday, the Coast Guard said. The marina is near Biscayne Bay, where the United States Sailing Association said Moore was last seen. Moore was out on the boat alone, U.S. Sailing said.
The search was called off as night fell Saturday. The Coast Guard said searchers covered more than 510 square nautical miles during the massive three-day search, which included a Coast Guard helicopter and rescue boat as well as boats from Miami police, the Florida Fish and Wildlife Commission, the National Park Service and members of the public.
"We are deeply saddened by Trevor's disappearance on Biscayne Bay, and wish to extend our sympathies to the Moore family," said Josh Adams, Managing Director of U.S. Olympic Sailing, who called Moore "a teammate and a friend to many."
The Florida Fish and Wildlife Conservation Commission is leading the investigation into Moore’s disappearance.
"At some point during his journey something must have happened because the boat came back to the marina, was found kind of tied up in some mooring lines without anyone on board," Liz Barraco of the Florida Fish and Wildlife Conservation Commission told NBC Miami on Friday.
Moore finished 15th in the skiff event at the 2012 London Games.