Two small planes have collided in mid-air, off the coast of Los Angeles.
Lifeguard boats have been unable to find any survivors.
Authorities have said it is unclear how many were onboard.
A log book has helped identify two men aged 61 and 81 who are thought to have been on board.
Another plane, piloted by a 72 year old woman was expected to arrive at Torrance airport earlier on Friday but has not appeared.
Divers have been sent to search the area.