The Marine Corps says seven Marines were killed in a collision of two helicopters north of Yuma, Ariz., during night training.
Lt. Maureen Dooley with the Miramar Air Base in California says the Marines were based at Camp Pendleton north of San Diego.
She says the crash involved Cobra and Huey helicopters.
Authorities say it happened Wednesday evening.
Dooley says investigators were still gathering information early Thursday.
It will be at least 24 hours before the Marine Corps releases the names of those killed.
To comment, the following rules must be followed:
Comments may be monitored for inappropriate content, but the station is under no legal obligation to do so.
If you believe a comment violates the above rules, please use the Flagging Tool to alert a Moderator.
Flagging does not guarantee removal.
Multiple violations may result in account suspension.
Decisions to suspend or unsuspend accounts are made by Station Moderators.
Questions may be sent to firstname.lastname@example.org. Please provide detailed information.