A US military helicopter has crashed off the coast of the southern island of Okinawa, Japanese officials say.
The Kyodo state news agency said 17 crew members were rescued, and seven people were injured.
Japan's defence ministry said the crash happened near Camp Schwab, the US Army base on the east coast of the island.
Kyodo said police confirmed that the helicopter crashed as it tried to land on a ship at sea. The exact cause is not yet known.
