A New Year's Eve explosion at a Swiss bar killed at least 40 and injured 100, with the cause under investigation.

On January 1, 2026, during a New Year's Eve celebration at Le Constellation Bar and Lounge in Crans-Montana, Switzerland, there was a fatal explosion that left at least 40 people dead and about 100 injured. The explosion happened shortly after 1:30 a.m. local time, destroyed a portion of the venue, started a large fire, and released a lot of smoke. Toxic fumes caused respiratory injuries and severe burns in many victims. Overwhelming medical resources were used as emergency personnel transported the injured to hospitals in Sion, Lausanne, Geneva, and Zurich. Authorities limited access to the region and banned flying. The cause is still being investigated, but preliminary reports suggest that there may have been a gas explosion connected to celebratory activities or that fireworks may have been misused. As more patients receive treatment, the death toll may increase.