Pakistan on Monday suspended expeditions on its second-highest peak, evacuating climbers from Nanga Parbat after 10 foreign tourists were shot dead by Islamist gunmen at a base camp.

Well-armed and well-prepared attackers dressed in police uniforms stormed the camp at the foot of Nanga Parbat late Saturday, shooting dead the climbers and a Pakistani guide at point-blank range, officials said.

“We are shocked, traumatised and full of anger. Pakistan is known among the mountaineering community. It was a brutal massacre. These people were killed for no reason,” said Manzoor Hussain, president of the Alpine Club of Pakistan.

Around 40 remaining climbers on Nanga Parbat have been evacuated to Gilgit with treks on the peak now deemed unsafe, he said.

Hussain said there would be no further expeditions this summer and that requests for winter climbs would be subject to a security review.