Six ski mountaineers missing in the Swiss Alps since yesterday. The group, the police of the canton of Valais said in a note - had left Zermatt yesterday, at the foot of the Swiss side of the Matterhorn.

These are members of the same family from Valais. The weather conditions, explains the Swiss police, are currently very bad, which makes the rescue intervention "very delicate" The group is believed to be from the Valais canton, Switzerland.