Seamus Lawless, 39, of Ireland is missing at approximately 8,300m on Everest. Lawless is believed to have slipped and fallen near the Balcony area while descending from the summit with four other members of the 2019 Irish Everest Expedition.
Seven Summit Treks, the guiding company, has a team of Sherpas currently searching for him.
Lawless is an assistant professor at the School of Computer Science and Statistics at Trinity College, Dublin.
Updated 9am GMT: The climber remains missing after searches on May 16 and 17.