The U.S. Coast Guard says two Marine helicopters have collided off the Hawaiian island of Oahu.
Coast Guard Chief Petty Officer Sara Mooers tells The Associated Press that each aircraft had six people aboard.
She says a debris field has been spotted off the coast.
Marine Capt. Timothy Irish confirmed to the AP that an active search and rescue is underway for two CH-53s, transport helicopters. He says the aircraft were from the 1st Marine Aircraft Wing from Marine Corps Base Hawaii.
There is no immediate word Friday on what caused the collision or if any survivors have been found.