The accident happened between the communes of Susch and Zernez in the far-eastern canton of Graubunden.
“Several people died in the coach crash in Susch. Several others were also injured,” the cantonal police said on X, without giving details on the circumstances of the accident or the victims’ identities.
Footage broadcast by Swiss media showed many rescue workers rushing about around the coach, which has overturned onto its side below the road, and helicopters stationed nearby.
According to the Swiss press, the bus belonged to the Dutch Oad tour operator, which offers trips across Europe.
Zernez is the entry point for visitors to the Swiss national park, a vast Alpine reserve stretching more than 100 square kilometres (40 square miles) across the mountainous Engadine valley.
