Five French Foreign Legionnaires were killed Monday during a training exercise in the French Alps, the second mountain tragedy in France in less than a week.
Another six soldiers were injured near the resort of Valfrejus, with one in intensive care in hospital after suffering hypothermia.
They were among a group of about 50 soldiers taking part in the skiing exercise.
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Three helicopters were involved in the search, as well as five police dogs and three doctors.
The nationalities of the victims were not immediately known. The French Foreign Legion attracts recruits from around the world.
French President Francois Hollande expressed "the nation's solidarity" over the deaths and wished the injured a speedy recovery.
He also asked Defence Minister Jean-Yves Le Drian to head to the scene of the accident, the presidency said in a statement.
Drian was expected to arrive early Tuesday.
The avalanche took place at 1:50 pm (1250 GMT) at an altitude of between 2,350 and 2,600 metres (7,700-8,500 feet).