Officials say the aircraft, a MV-22B Osprey, crashed in a remote area near the town of Glamis in Imperial County. The military has not released any details on the condition of the Marines who were on board.
The MV-22B Osprey belonged to the 3rd Marine Aircraft Wing based at Camp Pendleton and went down at 12:25 p.m. during training, said Maj. Mason Englehart, spokesman for the 3rd Marine Aircraft Wing, an aviation unit headquartered at Marine Corps Air Station Miramar, in San Diego
The tiltrotor aircraft can take off and land as a helicopter but transit as a turboprop aircraft.
The Marines denied early social media reports asserting that the aircraft was carrying nuclear material.
“There was no nuclear material on board the aircraft,” the Marines said.
Military and civilian first responders were at the crash site.
The Associated Press contributed to this report.
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