On January 3, local time, the Swiss canton of Valais prosecution said that a criminal investigation had been launched against the operator of the “Constellation” bar in the town of Cron-Montana where the fire occurred. The bar's operators are a French couple. They are charged with three counts of manslaughter, negligent bodily injury, and negligence causing a fire. Photos and videos taken at the time of the fire showed that the flames spread rapidly through the ceiling covered with sound-absorbing foam in the basement of the bar. The Valais prosecution said the investigation must specifically determine whether this foam material complies with safety regulations. A fire broke out in the early morning of the 1st at a bar in Cron-Montana, a ski resort in Valais. Police said in the afternoon of the same day that they had killed about 40 people and injured 115 others.

On January 3, local time, the Swiss canton of Valais prosecution said that a criminal investigation had been launched against the operator of the “Constellation” bar in the town of Cron-Montana where the fire occurred. The bar's operators are a French couple. They are charged with three counts of manslaughter, negligent bodily injury, and negligence causing a fire. Photos and videos taken at the time of the fire showed that the flames spread rapidly through the ceiling covered with sound-absorbing foam in the basement of the bar. The Valais prosecution said the investigation must specifically determine whether this foam material complies with safety regulations. A fire broke out in the early morning of the 1st at a bar in Cron-Montana, a ski resort in Valais. Police said in the afternoon of the same day that they had killed about 40 people and injured 115 others.