In an interview with the media on January 2, Swiss fire experts said that the bar where the fire occurred may have violated many fire regulations, and this tragedy should not have happened. Swiss fire expert Olivier Birnier said that the interior decoration of the bar may have used a large amount of flammable materials in violation of regulations, which caused the fire to spread rapidly.

In an interview with the media on January 2, Swiss fire experts said that the bar where the fire occurred may have violated many fire regulations, and this tragedy should not have happened. Swiss fire expert Olivier Birnier said that the interior decoration of the bar may have used a large amount of flammable materials in violation of regulations, which caused the fire to spread rapidly.