A regional PostBus burst into flames Tuesday evening in the Swiss town of Kerzers, killing at least six people and injuring five others as police and prosecutors opened a criminal investigation into whether the blaze was deliberately started.
The fire drew national attention because it struck a routine public bus trip near Bern and quickly shifted from an emergency response to a criminal case. Fribourg cantonal police said the blaze broke out on Murtenstrasse at about 6:25 p.m. on a bus traveling from Düdingen to Kerzers. By late Tuesday, the dead had not been publicly identified, three badly injured people had been taken to hospitals, and authorities were still trying to determine how many passengers had been on board when the fire began.
Police said the first alarm reached dispatch shortly after 6:25 p.m., sending firefighters, ambulances and a REGA rescue helicopter to the scene in this town about 25 kilometers west of Bern. By the time crews arrived, the vehicle was fully engulfed. Firefighters carried out rescue work while officers set up a security perimeter around the burned bus and nearby street. Fribourg police spokesperson Frederic Papaux later told reporters that no other vehicle was involved and that passengers were seen getting out of the bus in panic as emergency workers arrived. The bus was part of the PostBus network, the yellow regional service tied to the Swiss postal system that links towns and villages across the country. Investigators said the fire broke out during the route, not after the vehicle had reached a depot or terminal, and the damaged shell remained in place for forensic work late into the night.
As the casualty count became clearer, officials said six people had died and five others had been injured. Three of the injured were taken to hospitals with severe injuries, while two were treated at the scene and did not require hospitalization. Police did not release the names, ages or nationalities of the dead, and they said the identities had not yet been established. Authorities also declined to say how many people were on the bus in total, leaving a basic part of the timeline unsettled more than three hours after the fire. Papaux said investigators had elements suggesting a deliberate act by someone inside the bus, but police stopped short of describing exactly what those elements were. Another police spokesperson, Christa Bielmann, said reports involving a person and fuel were being examined, but she said it was too early to say whether the case had any terror link. No arrests had been announced late Tuesday, and police did not publicly identify a suspect.
The setting helped explain the shock that followed. Kerzers is a small community in Fribourg canton, and the bus was not a charter or long-distance coach but an everyday regional service used by residents for ordinary travel. In Switzerland, PostBus routes are a familiar part of life outside major cities, connecting smaller towns to train stations, schools and shopping areas. That made the images from Murtenstrasse especially jarring: a routine local bus reduced to a blackened frame under police lights and fire hoses. The blaze also came less than two months after another catastrophic fire in Switzerland, the Jan. 31 bar fire in Crans-Montana that killed dozens of people, a disaster that had already put fire safety and emergency response under a national spotlight. Swiss President Guy Parmelin said the Kerzers deaths shocked and saddened him and offered condolences to the families and thanks to rescue workers, adding to the sense that the incident had quickly grown beyond a local tragedy.
The procedural path is now centered on a criminal investigation led by the public prosecutor. Fribourg police said a penal inquiry had been opened and that prosecutors were directing the next steps. Those steps are expected to include witness interviews, forensic examination of the bus, identification of the dead, medical updates on the injured and a reconstruction of where passengers were seated or standing when the fire broke out. Officials also are likely to review any available surveillance video from nearby streets or businesses and any technical data from the vehicle itself. A hotline for relatives was opened Tuesday night, underscoring how many families were still waiting for formal confirmation about loved ones. The Fribourg government said a news conference would be held at 2 p.m. Wednesday in Granges-Paccot, at the cantonal police command building, where authorities are expected to provide a more complete account of the deaths, the injury toll and the investigative theory behind the fire.
At the scene, the aftermath carried the look of both disaster and evidence collection. Photos from Kerzers showed barriers around the road, firefighters moving through foam and water, and a scorched yellow bus stripped almost to its frame. Some rescue workers gathered under a red canopy while forensic staff worked behind screening near the vehicle. The Fribourg cantonal government praised the professionalism of emergency crews and other responders who handled what it called an exceptional situation. That official language was echoed by the visual reality on the street: a small-town transit stop turned into a sealed investigation zone, with the remains of a public bus at the center. For residents, the fact that the vehicle was part of an ordinary evening run made the loss harder to place. This was not a highway pileup or an industrial explosion. It was a fire on a neighborhood transport line, in a place where people would have expected a routine ride home.
Late Tuesday, the victims had not been named, three injured people remained hospitalized and authorities were preparing for Wednesday’s 2 p.m. briefing, the next point at which police and prosecutors may say more about how the fire began and who was on the bus.
Author note: Last updated March 10, 2026.