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KATHMANDU: Two Indian climbers have died on Mount Everest during a record-breaking period of ascents via Nepal’s southern route, as experts warn of overcrowding on the world’s highest peak.

“They fell ill while descending at high altitude. We are working out how to retrieve the bodies,” Nivesh Karki, director at Pioneer Adventures, said.

He named them as San­deep Are, who he said summited on May 20, and Arun Kumar Tiwari, who rea­ched the peak on May 21.

On Thursday, a record number of climbers reached the 8,849-metre (29,032-foot) Himalayan peak from the Nepali side, according to tourism officials, who gave a preliminary total of 275 pending final confirmation.