Overview
- Police in the canton of Valais said the injured were treated at the scene and transported to multiple hospitals.
- One person sustained serious injuries, according to police statements reported by Swiss media.
- The blast occurred on a float equipped with a confetti cannon during a Fastnacht parade in the village of Le Châble.
- Swiss media report that police currently suspect an air compressor linked to the cannon may have exploded, a cause not yet officially confirmed.
- Emergency services used ambulances and helicopters for evacuations, with four helicopters reported deployed.