Two Marines Killed in Camp Pendleton Helicopter Crash

September 19, 2011 Updated Sep 19, 2011 at 7:14 PM EDT

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Two Marines Killed in Camp Pendleton Helicopter Crash

September 19, 2011 Updated Sep 19, 2011 at 7:14 PM EDT

A pair of U.S Marines were killed Monday afternoon in a helicopter crash during a training exercise at Camp Pendleton, according to the Orange Country Register.

Military officials did not release details about the accident, according to the report, other than calling it a "mishap." The cause of the crash is under investigation.

Read the Orange County Register story HERE.