Champagne sparklers and a fast-spreading inferno: How a deadly Swiss bar tragedy unfolded

By Kara Fox, Thomas Bordeaux, Lou Robinson, CNN (CNN) — As young partygoers rang in the New Year at a packed bar in the Swiss Alps, the celebrating quickly turned into a nightmare when a devastating fire tore through the basement, killing at least 40 people and injuring 119 others. The blaze at Le Constellation