Four bodies have been found on the French side of Mont Blanc.
French rescue officials say the bodies of the four climbers were found close to the peak of the mountain after they went missing on Saturday in bad weather.
The Chamonix-Mont Blanc search and rescue team found the bodies of the climbers, two of them Italian and two from South Korea, at an altitude of 4,700 metres (over 15,400ft) on the Alps’ highest peak.
They died of hypothermia, rescue officials said.
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The unaccompanied climbers had alerted rescuers on Saturday afternoon, but weather conditions continued to deteriorate, preventing rescuers from reaching their location from the ground or by helicopter.
Two other Korean climbers were successfully rescued on Sunday morning at an altitude of 4,100 metres (over 13,400ft) after rescuers deployed a highly complex operation.
French authorities have opened an investigation.