Medical staff and airport personnel carried victims of the fire at a Swiss ski resort bar onto a Swiss Air-Ambulance plane at Sion Airport on Friday (January 2).

The fire at the "Le Constellation" bar killed more than 40 people and injured more than 100 during a New Year's Eve party in the upscale ski resort of Crans-Montana in southwestern Switzerland.

The bodies of those killed in the fire have now all been removed from the bar, a Swiss official told Reuters. Police were still on site to continue investigations into the cause of the tragedy, which Swiss authorities said they were treating as a fire, not an attack.

Some accounts from survivors and footage broadcast on social media suggested that the ceiling of the bar's basement may have caught fire when sparkling candles got too close.

Production: Fatos Bytyci, Anita Kobylinska/Reuters