Five people have been killed in a helicopter crash in the French Alps on Tuesday, French President Emmanuel Macron said.
A sixth passenger is injured and fighting for his life, officials added.
The helicopter was carrying an air rescue crew on a training mission when it went down at an altitude of 1,800 meters, local authorities said.
The pilot of the aircraft, which also had another pilot on board as well as two winch operators and two mountain rescue workers, was able to eject and give the alert.
Three helicopters were dispatched but had been unable to reach the accident site due to fog while rescue teams were also trying to approach by ground, the Savoie prefecture said in a statement.
France's air accident bureau said separately that it had opened an investigation and would dispatch a team to the site.

Iran rejects Trump's talk of negotiation as Israel and Iran launch airstrikes
Netanyahu seeks to avoid snap vote as Iran war gives no boost in polls
Hundreds evacuated after fire hits luxury Paris hotel
Germany renews push for sugar tax and energy drinks ban for children
No injuries reported as drone attack hits fuel tank at Kuwait's airport
US expected to send thousands more soldiers to Middle East
Philippines works with Washington to obtain oil from US-sanctioned countries
US safety agency says tracking system failed at LaGuardia during jet collision
