A tragic fire at a bar in Crans-Montana, Switzerland, killed 40 people and injured 119 on New Year's Day. Authorities say sparklers placed on champagne bottles that got too close to the ceiling probably started the blaze. Valais Attorney General Beatrice Pilloud said the investigation would check the materials used in the bar, fire safety measures, and the number of people inside. "If that is the case, and if those people are still alive, there will be a case opened against them," she added. Police commander Frédéric Gisler said identifying the victims is a top priority. Among the injured are 71 Swiss, 14 French, 11 Italians, and four Serbs, with some still in critical condition. French footballer Tahirys Dos Santos was "severely burned" and flown to Germany for treatment. Valais region president Mathias Reynard said about 50 injured have been or will be moved to European burn centers. A national mourning ceremony will take place in Crans-Montana on January 9. Investigators are also examining whether the bar's ceiling met building rules, especially related to foam installation. Interviews with the bar's French managers and witnesses helped list people present during the fire. A nearby bar patron, Lea Zehnder, described hearing screams and helping those badly burned. Le Constellation bar, where the fire happened, can hold up to 300 people but the exact number present during the fire is unknown. Families and friends have gathered near the site with flowers and candles, while a conference center nearby supports relatives of the missing.