An avalanche has struck the Alpine ski resort of Tignes, French officials said.

Rescue services have launched a search at the resort in the Savoie area of south-west France.

No details have been released about potential casualties, but French media reported that several skiers have been caught up in the avalanche.

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Police forces in Tignes confirmed they are assisting.

Four snowboarders died last month in Tignes in another avalanche near the resort.