Overview
- The blast occurred shortly before 15:00 on Saturday during the Bagnes carnival parade in Valais, police said.
- Eleven people received on-site care before being transported to regional hospitals.
- One victim is in serious condition, according to public broadcaster RTS.
- Emergency response included four ambulances, three helicopters and a SMUR doctor, according to RTS.
- The public prosecutor has opened an investigation, and those responsible for the float have not commented.