KATHMANDU, Nepal — An Irish climber has died and an Indian is lacking after falling right into a crevasse in two separate incidents on Mount Annapurna, the world’s tenth highest mountain, an expedition organizer stated Tuesday.

Irish climber Noel Richmond, 56, died Monday whereas coming back from the 8,091-meter (26,540-foot) summit, Thaneswar Guragai of Kathmandu-based Seven Summit Treks stated. The explanation for demise was not instantly identified.