Authorities have suspended the search for a Navy SEAL who went missing after he became separated from his unit during open ocean swim training off Oahu's Kaena Point.

The Coast Guard said Sunday that its crew, Honolulu lifeguards and firefighters along with Navy and Marine Corps crews have been searching for the sailor since Tuesday.

They searched over 24,000 square miles using aircraft, cutters and small boats but found no signs of him.

The sailor's name was not released by the Coast Guard.

A call to a Navy spokesman was not immediately returned.