Overview
- The blast struck the Le Constellation bar in Crans-Montana at about 01:30 local time, according to Swiss police.
- Officials report several fatalities and multiple injuries, with precise figures not yet released.
- A large-scale response is underway with numerous police, fire and rescue teams, and the incident zone remains sealed off.
- Authorities have imposed a temporary no-fly zone above the resort and opened a helpline for affected families.
- The cause has not been established, with reports of fireworks in a basement described as unverified, and a police news conference is expected within the hour.