An avalanche that smashed into a Pakistan army camp Saturday in aremote area in the Himalayas has buried as many as 135 people, including 124 soldiers, the military said.

"As many as 135 persons including 124 army soldiers and 11 civilians... came under a huge snow slide early this morning," said a statement from the military. They earlier said at least 100 had been buried.

The soldiers were from the 6 Northern Light Infantry Battalion and the avalanche had covered an area of one-square kilometre (a third of a square mile), the statement added.

The avalanche happened in the mountainous Gayari district near the Siachen glacier, in the disputed region of Kashmir on the de facto border with India, an area which is described as the world's highest battleground.

Over 150 soldiers with sniffer dogs and aided by helicopters have been deployed to search for those missing.