KATHMANDU: At least one climber was killed and a few others suffered from altitude related sicknesses, including snow blindness and frost bite, while descending from the top of Mt Everest, expedition organisers said.

A foreign climber died at Camp IV after an expedition team managed by the Seven Summit Treks was descending to lower camps from the the summit of the world's highest mountain on Friday night, Pemba Sherpa, Manager at Seven Summit Treks, informed.

"We are trying to identify the details of the deceased climber as his body has still been lying at Camp IV," he said, adding that the climber was part of an expedition team led by Arnold Coster.

There was a huge crowd of climbers in higher camps as nearly 400 mountaineers -- both Nepalis and foreigners -- made it to the top of Mt Everest since May 11.

A few climbers including an Indian woman and three westerners also sustained serious altitude sicknesses, Sherpa quoted expedition members as saying from the higher camps.

Helicopters also conducted a number of longline rescues from higher camps to evacuate the Everest summiteers, base camp officials informed.

Earlier, a Sherpa was killed on the Mt Lhotse South face while fixing the summit ropes. Climbing on the world's fourth highest mountain was still uncertain after most of the climbers decided to abandon their bids due to several reasons.

Department of Tourism issued 78 climbing permits for Mt Lhotse this season.

A Sherpa guide and an Indian climber were killed on Mt Makalu and Mt Dhaulagiri respectively in the last few days.

Mt Shisha Pangma in Tibet recorded two deaths while two trekkers were killed in Khumbu region after the season's climbing activities started in March.