TOKYO, Japan (AP) – A nighttime collision with a container ship off the coast of Japan killed seven U.S. sailors on the USS Fitzgerald and heavily damaged the Navy destroyer.

Vice Adm. Joseph Aucoin, the commander of the Navy’s 7th Fleet, told reporters at the fleet’s base in Yokosuka, Japan, that “our deepest sympathies are with the families of these sailors.”

The cause of the early Saturday morning collision with the Philippine-flagged ACX Crystal is under investigation.

The Fitzgerald’s captain, Cmdr. Bryce Benson, was airlifted off the ship with a head injury, as were two other crew members with minor injuries.

The U.S. Navy has identified the seven sailors who died in a collision between the USS Fitzgerald and a container ship off Japan on Saturday.

– Gunner’s Mate Seaman Dakota Kyle Rigsby, 19, from Palmyra, Virginia

– Yeoman 3rd Class Shingo Alexander Douglass, 25, from San Diego, California

– Sonar Technician 3rd Class Ngoc T Truong Huynh, 25, from Oakville, Connecticut

– Gunner’s Mate 2nd Class Noe Hernandez, 26, from Weslaco, Texas

– Fire Controlman 2nd Class Carlosvictor Ganzon Sibayan, 23, from Chula Vista, California

– Personnel Specialist 1st Class Xavier Alec Martin, 24, from Halethorpe, Maryland

– Fire Controlman 1st Class Gary Leo Rehm Jr., 37, from Elyria, Ohio