An expedition organiser says an Indian climber, who had fallen sick and was being helped down Mount Everest, has died, becoming the third to die in recent days while attempting to scale the world’s tallest peak.

Wangchu Sherpa of the Trekking Camp Nepal agency in Kathmandu said on Monday that Subhash Paul died overnight as he was being helped down the mountain by Sherpa guides.

Two other Indian members of Paul’s team have been missing since May 21. Another team member, an Indian woman who had fallen sick, was resting at a camp at a safer altitude.

A Dutch man died on Friday and an Australian woman died hours later after suffering from altitude sickness on Mount Everest. Dozens of other climbers have developed frostbite or become sick near the summit in recent days.