2 pilots killed in Marine helicopter crash in Arizona

 US Marine helicopter crash

YUMA, Ariz. (AP) — Two Marine pilots have died in a helicopter crash during a training mission in southwestern Arizona, U.S. Marine Corps officials said Sunday.

The AH-1Z Viper crashed Saturday night while the pilots were conducting a training mission as part of a weapons and tactical instructor course, according to the Marine Corps. The cause of the crash is under investigation.

Capt. Gabriel Adibe, a Marine Corps spokesman, said the helicopter crashed on the vast Marine Corps Air Station Yuma training grounds but no additional information was immediately available.

The names of the pilots who died have not been released pending notification of their families...