Buachaille Etive Mor
Helicopters from Lossiemouth and Prestwick have been scrambled to the scene of the accident, which happened at noon today.
UPDATE 8pm: 3 of the climbers have died after being taken to Belford Hospital in Fort William whilst a fourth has been treated shoulder injuries. Reports suggest that the avalanche occurred in Coire na Tulaich, the usual route of ascent for those heading for the summit of the Buachaille, and affected nine climbers in two groups. Further update: The dead climbers have now been named as brothers, Eamonn and John Murphy, aged 61 and 63 from Carrickfergus and Portrush in County Amtrim, Northern Ireland, and Scot Brian Murray, 46, from Monifeith, Tayside.