A New Year's Eve fire at the Le Constellation bar in Crans-Montana, Switzerland, killed at least 40 people and injured over 100. Investigators believe the blaze was likely ignited by sparkler candles, also known as Bengal lights or fountain candles, attached to champagne bottles and held too close to the ceiling. The fire spread rapidly, with investigations also examining the role of sound-dampening foam in the ceiling and potential negligence. The bar's owners maintain that safety regulations were followed, but authorities are probing criminal liability. Identifying victims and the injured, many of whom are young, is an ongoing and sensitive process.