一架美军直升机在冲绳岛坠毁

U.S. and Japanese officials say a U.S. Air Force helicopter has crashed on Japan's southern island chain of Okinawa.

Authorities say the crash took place Monday afternoon at a training ground near the U.S. Marine's Camp Hansen in central Okinawa.

Video footage showed black smoke rising from a fire in a forested area.

There is no information about casualties on the aircraft or on the ground.