Six people were killed after the snowmobile carrying passengers from a restaurant veered off the piste into a 100m deep precipice.

      Investigators are looking into how a small snowmobile ended up on a black piste, where only professional snow-cat vehicles are allowed.

      Criminal charges are expected to be brought against the driver of the vehicle, which is said to be brand new.

      Behind the wheel was Azat Agafarov, the owner of the hotel the Russian family was staying at. He is the second only survivor but has sustained numerous fractures.