The Trinity College professor reached the peak of the world's highest mountain this morning.
The 39-year-old was part of an eight -member expedition that includes a number of Irish climbers.
In a statement, Trinity College Dublin says it is offering any support it can to his family at this extremely distressing time, and remains hopeful that he will be found safely as soon as possible.
The Department of Foreign Affairs says it stands ready to provide consular assistance if requested.
Wicklow Hails Role Model Warren Kavanagh Who Calls Time On Successful Career
Wicklow Councillors Split On Local Property Tax Rates
Wicklow's Jack Reynor To Be Honoured In Los Angeles
Ominous Soundtrack Drowns Out Councillor's Message As Row Over Council Rent Hikes Rumbles On
East Coast FM's Jack Massey Among Ten Selected for the Learning Waves Journalism Graduate Programme