While the cause of the disaster is still under investigation, videos and photos suggest the blaze spread quickly

Switzerland is reeling from one of its worst tragedies after a fire ripped through an Alpine bar during a New Year’s Eve celebration, leaving more than 40 people dead and dozens of others with serious burn injuries.

While the cause of the disaster in the Crans-Montana luxury ski resort is still under investigation, video, photos and reports from witnesses suggest the blaze spread quickly across the ceiling of the packed club.