Nepalese mountaineering officials are investigating reports of a fight between three foreign climbers, including a Briton, and local Sherpa guides on Mount Everest.
Dipendra Poudel, of the Mountaineering Department, said the three climbers - from Britain, Italy and Switzerland - were involved in arguments with some Sherpa guides on Sunday.
Mr Poudel said both sides accuse each other of starting the fight, adding that mountaineering officials based at the Everest base camp were investigating the incident.
Sherpa guides hired by the hundreds of Western climbers attempting to climb the world's highest mountain are the first ones to fix the ropes on the routes so their clients can climb to the peak.
The Sherpas are accusing the foreign climbers of starting the fight.