A tourist bus has been involved in a serious road accident in Switzerland, resulting in multiple deaths and injuries. The crash occurred along the road section between Susch and Zernez. Details regarding the cause of the accident are currently under investigation by authorities. Emergency services are at the scene providing assistance to the injured and securing the area. The extent of the injuries varies, with some reported to be critical. Further updates will be provided as more information becomes available regarding the nationalities of those involved and the specific circumstances leading to the collision near Susch and Zernez. This incident marks a significant tragedy for those affected and highlights the risks associated with road travel.