Video Reveals Rapid Inferno: Key Clues in Deadly Swiss Bar Fire

Investigators are analyzing video and images to understand how a fire spread with devastating speed at a Swiss bar. The blaze killed at least 40 people and left many more critically injured. Officials say this rapid spread is now a key focus. The visual evidence is crucial. They will examine the building's materials, layout, and possible ignition sources. The goal is to determine the exact cause and prevent future tragedies.