Helicopter crash kills three U.S. Marines during training exercise in Australia

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MELVILLE ISLAND, A.U.S — Three U.S. Marines are dead and 20 others are injured after a helicopter crash in Australia.

The Marine Corps released a statement saying a tilt rotor aircraft went down during a training exercise on Melville Island Sunday morning. There were 23 Marines on board.

Five were reportedly taken to a hospital in the city of Darwin in serious condition.

The cause of the crash is under investigation.