Fellow climbers say 44-year-old Gianni Goltz had scaled the nearly 9,000-meter-high mountain without the aid of bottled oxygen.
Climbing to the top of Mount Everest without additional oxygen is considered risky because of the very thin air, which makes it hard to breath.
News of the death came shortly after officials announced that a veteran Sherpa guide climbed to the top of Mount Everest for a record 18th time, Thursday.
Meanwhile, a Spanish climber has died while trying to reach the top of another Himalayan mountain.
Inaki Ochoa was part of an expedition organized by a Spanish newspaper Diario de Navarra.
The newspaper said Friday Ochoa died from brain and lung damage while he tried to reach the summit of Annapurna.
Some information for this report was provided by AFP and AP.
Source: By VOA News
