An explosion at the Ritom hydroelectric power plant in Piotta, Switzerland, has resulted in two fatalities. The incident occurred on Wednesday in the Val Leventina valley and caused a partial collapse of the building's structure. Swiss public broadcaster RSI reported the updated casualty count, noting the cause of the explosion remains unknown at this time. Investigations are underway to determine the factors that led to the blast at the Ritom facility. Authorities are assessing the extent of the damage and working to secure the area. Further updates will be provided as more information becomes available regarding this incident in Piotta.