Washington: Two US military helicopters collided over a training range in Arizona on Wednesday killing seven Marines, the Marines said on Thursday.
The aircraft, an AH-1W "Cobra" and a UH-1Y "Huey," were conducting routine training operations when the accident occurred.
The marines said the accident took place at the Yuma Training Range Complex in Yuma at about 8 p.m.
The Marines said the incident, which was in a remote part of the training range, was under investigation.
First Published: Thursday, February 23, 2012, 20:24