A climber from Bangladesh and another from South Korea have died on Mount Qomolangma as hundreds flock to the world's highest peak during good weather, Nepalese tourism officials said Tuesday.

"Both men died while descending from the summit on Monday," an official with the tourism ministry told AFP.

Sung Ho-seo, 34, of South Korea was attempting the climb without supplementary oxygen and died on his way down the mountain.

Mohammed Hossain, 35, from Bangladesh, died in his tent a few hours after successfully climbing the summit.

"The exact cause of death is unknown, but altitude played a part," said the official.