Three climbers were reported dead on Thursday in the Mont Blanc massif, a regional radio reported.

The three mountaineers are believed to have lost their lives after they fell from an altitude of about 3,600 meters in the Miage Domes area of the mountain, France Bleu Pays de Savoie radio said.

The victims' identities are not yet known, it added.

A recovery operation is underway, according to the report.