An Afghan military helicopter crashed in a remote region of the southern Zabul province on Thursday, killing a total of 17 soldiers, including five crew members, officials said. Provincial police chief Mirwais Noorzai said the cause of the crash was not yet known and was under investigation. The Defense Ministry said the crash was believed to be caused by a technical problem, but provided no further details. Aman said the helicopter was a Russian-made M-17, and was flying between Zabul's capital Qalat and Shinkay, 20 kilometers away.