Swiss authorities are investigating a predawn blaze that swept through a basement bar in this Alpine resort around 1:30 a.m. Thursday, killing about 40 people and injuring at least 115 more during New Year festivities. Police said the fire broke out at Le Constellation, a popular late-night spot in the town center, as hundreds celebrated the turn of the year.
The scale of the tragedy and the setting magnified the shock at one of Europe’s marquee winter destinations. Valais canton police, prosecutors and national forensic teams began processing the scene and collecting video from inside and outside the bar as hospitals from Sion to Lausanne reported a surge of burn and smoke inhalation patients. Officials cautioned that the death toll and identities remain preliminary while recovery and notification continue. Early accounts describe flames racing across overhead materials soon after bottle service began on the crowded floor, prompting a rush for a narrow stairwell to the street. The government opened a crisis center, and Switzerland’s president, Guy Parmelin, signaled a period of national mourning while first responders and medical teams worked through the night.
Witnesses said the room darkened with smoke within moments after a bottle presentation, and that heat forced guests to crawl or press toward the exit. Several patrons smashed windows to breathe. “It happened in seconds,” one survivor said, describing a wave of people moving toward the stairs as lights flickered. Police reported that first units arrived within minutes from local stations and immediately began triage on the sidewalk while firefighters attacked the basement blaze. The venue sits off a commercial street near hotels and rental chalets where many visitors had gathered after midnight. By dawn, the entrance was cordoned with police tape, portable lights illuminated the stairwell, and helicopters thumped overhead as critical patients were transferred to regional centers.
Authorities said more than 40 ambulances and over a dozen helicopters were mobilized as part of the response, with patients distributed to hospitals in Sion, Lausanne, Geneva and Zurich. Several remained in critical condition by late afternoon. Officials said victims include foreign tourists and Swiss residents, and that consular officers from neighboring countries were assisting families. Investigators said they found no indication of a deliberate attack. Prosecutors are focusing on how the first flame traveled across the ceiling and whether interior finishes, decorations or acoustical panels accelerated a flashover. They are also reviewing occupancy counts, staffing, crowd management and door hardware to determine whether the egress route contributed to the death toll. The bar’s operators were interviewed and asked for maintenance records, alarm logs and training documents.
The town of Crans-Montana, known for World Cup ski races and a summer golf tournament, was filled with holiday visitors this week. Le Constellation operates below street level in a tight nightlife corridor that draws young travelers and seasonal workers. In recent years, Swiss cantons have added safeguards for clubs and concert spaces that emphasize clear exits, posted capacity and fire-resistant materials. The New Year incident is now a test of how those rules worked under stress. Emergency planners will study the stair configuration, the state of emergency lighting and signage, and whether crowd density around the bottle-service presentation created an obstacle when smoke descended. Officials have not released a verified capacity number for the night or the final list of the dead. Identification is complicated by severe burns and by the international mix of guests.
Prosecutors opened a criminal investigation into potential negligence resulting in death, a standard step when mass casualties occur in a public venue. Inspectors are tracing the provenance of any pyrotechnic candles used for champagne service and whether such items were permitted. Police said teams are interviewing staff, guests and nearby business owners, and are canvassing for smartphone video to reconstruct the ignition and spread. Structural engineers began checks to ensure the building can be safely entered by forensic crews, who are collecting debris for lab analysis. A preliminary technical briefing is expected after the scene is fully stabilized. Authorities reiterated that rumors about explosives are unfounded and that there is no evidence of arson.
Hospitals in Valais and Vaud cantons activated surge plans overnight, calling in burn specialists and additional intensive care staff. A regional health coordinator said ambulance crews triaged patients with priority for airway injuries, carbon monoxide exposure and severe burns, while those with orthopedic injuries from falls and crowd crush were routed to trauma bays. Medical officials said some patients were flown to Lausanne University Hospital and to facilities in Geneva and Zurich to relieve pressure on local units. Town leaders said a family reception center was established near the resort’s municipal hall with mental health staff and translators. Volunteers from neighboring Alpine communities arrived with blankets and hot drinks for those waiting on news.
Crans-Montana’s tourism office said winter occupancy was high for the holiday week, with restaurants, bars and clubs busy after midnight. Residents described the first moments after alarms as surreal, with party music giving way to sirens and then the whir of generators as emergency lights came on. A shopkeeper on the block said people emerged coughing and covered in soot while officers formed a corridor for medics to move in and out. Staff at nearby venues said they counted patrons and checked exits as news spread, then closed early out of respect. By midmorning, makeshift memorials of candles and flowers appeared along the street while snow fell lightly and visitors refreshed news alerts on their phones.
Past disasters have shaped safety policies in nightlife spaces across Europe, including stricter limits on indoor pyrotechnics and requirements for fire-retardant décor. Swiss regulators have periodically updated guidance on club occupancy and evacuation planning, but enforcement varies by municipality. Fire scientists said basement layouts can produce rapid heat buildup and thick smoke that descends quickly, making a single stairwell a chokepoint within minutes. Investigators will compare this event to previous cases where bottle-service pyrotechnics ignited ceilings or wall coverings, then assess whether local rules on such displays were clear and followed. Insurance investigators typically join such inquiries to examine electrical systems, fuel loads and any prior notices about hazards.
Officials said families from several countries are among those seeking information about missing loved ones. Italian regional authorities reported unresolved contact with multiple citizens who were believed to be at the venue, while French and German consulates set up hotlines. Airlines and rail operators prepared to accommodate family travel to the region. Local officials said the municipality will review its event permitting and inspection cadence for high-traffic holiday periods. The resort, which markets itself to international visitors, had planned a weekend of fireworks and après-ski events. Several towns canceled public displays and concerts in solidarity, and religious leaders organized vigils.
Valais police said the next formal update would come after additional victim identification and interviews with staff and witnesses. Investigators are expected to release a preliminary chronology, including exact time stamps for the ignition, alarm activation, first emergency call, arrival of initial units and the start of evacuations. Any decisions about charges, license suspensions or administrative sanctions will follow once the technical report is complete. Prosecutors outlined the steps ahead, which include laboratory analysis of ceiling and wall samples, examination of door and latch mechanics from the stairwell, and a review of headcounts recorded by the venue and private security. Officials did not provide a date for completion, although they emphasized that families will be informed first of any changes to the casualty figures.
On the main street above the club, the overnight crowd thinned into clusters of people speaking quietly by hotel entrances and shuttle stops. “We heard shouting and saw smoke rising from the stairway,” said a bar employee who finished a shift next door and ran outside. A taxi driver said he ferried patrons who left behind coats and wallets in the rush and later returned looking dazed. A medical volunteer described handing out water and thermal blankets to those waiting to be evaluated. Hotel receptionists set out tea and tissues on lobby tables. By afternoon, a small memorial of candles, carnations and lift passes had gathered near the police cordon.
As of Thursday night, officials reported about 40 dead and at least 115 injured from the Crans-Montana bar fire, with several patients still critical and identification ongoing. Authorities said they will provide the next public briefing after additional scene work and hospital updates on Friday, Jan. 2.
Author note: Last updated January 1, 2026.