Kabul - An Afghan army corps commander and 12 other military personnel were killed when their helicopter crashed into a mountain due to bad weather in western Afghanistan on Thursday, an army spokesman said.

The M-17 helicopter was on its way from the western province of Herat to the neighboring province of Farah when it went down due to "bad weather," General Zahir Azimi, a defence ministry spokesman, said.

"General Fazel Ahmad Sayar, army corps commander for the western region, and 12 other army personnel were martyred in the incident," he said, adding that "there were no survivors among those on board."

He said that military pilots were also among those killed in the incident. (dpa)