3 Sherpa climbers missing on Mount Everest after falling into crevasse

Three Sherpa climbers were missing Wednesday after they fell into a deep crevasse on a treacherous section of Mount Everest just above the base camp, a Nepalese mountaineering official said.

They fell into the crevasse, thought to be about 160 feet deep, on Wednesday morning as they were moving toward the first camp on the world's highest mountain, said Yubraj Khatiwada of Nepal's Department of Mountaineering.

A rescue helicopter was trying to locate them while rescuers searched on foot, he said.