A regional train derailed Monday near Goppenstein, southern Switzerland, injuring five people, authorities said. The accident happened at 1,216 meters altitude as the area faces its second-highest avalanche warning, level four out of five. "According to initial findings, an avalanche may have crossed the tracks shortly before the train passed," police said. The public prosecutor’s office has launched an investigation. One injured person was taken to hospital. This accident follows deadly avalanches across the Alps. On Friday, three skiers died in an avalanche in Val d’Isere, France. Cedric Bonnevie, who manages the resort’s pistes, said one victim was French, the others foreign. He explained one victim was caught high on the slope while two others, part of a group of five including a guide, didn’t see the avalanche coming lower down. In Italy, rescuers reported 13 mountain deaths in one week, mostly avalanches linked to unstable snow layers. Fresh snow and wind-crafted weak layers have made the Alpine region especially dangerous. Federico Catania of Alpine Rescue said, "Under such conditions, the passage of a single skier, or natural overloading from the weight of snow, can be sufficient to trigger an avalanche." Fatal avalanches occurred on ungroomed slopes, far from monitored Olympic sites in Lombardy, Cortina d’Ampezzo, and Val di Fiemme. Authorities urge caution as avalanches threaten lives and safety across the Alps.