Skiers are feared buried alive and two others have been injured after an avalanche swept across a ski trail near the Swiss town of Andermatt.
The avalanche occurred mid-morning when many were on the slopes and it forced many skiers to stop and start digging for people who may be buried under the heavy snow.
A police spokesman said the avalanche was of a considerable size and it occurred just before 11am on slope number 30 in the Oberalppass area, according to witnesses.
It is not known how many skiers, if any, remain buried under the avalanche debris. But a video shows dozens of skiers being caught in the avalanche that started high up a mountain in an unpisted area and hit an open piste.