A serious accident involving a tourist bus occurred on Thursday in the Swiss canton of Graubünden. The bus, carrying a tourist group from the Netherlands, crashed into a road barrier, veered off the road, and overturned on its side. Police confirmed that there are fatalities and injuries as a result of the accident. The exact number has not yet been disclosed, as authorities must first notify the relatives of the deceased and the injured. According to a police spokesperson, recovery operations for the bodies continued late into the evening at the site of the tragedy. Preliminary reports indicate that there were 48 people on the bus. This information was confirmed by a representative of the Dutch Association of Travel Industry (ANVR), as quoted by the Swiss newspaper Blick. The accident occurred in the afternoon in the Engadin valley between the towns of Zuz and Cernetz. According to preliminary investigation findings, the bus first collided with a road barrier, after which it veered off the roadway and overturned. Police report that there are currently no signs of a collision with other vehicles. The circumstances of the incident are being established. Large emergency service forces were dispatched to the accident site. The rescue operation involved police, firefighters, medical personnel, and several helicopters. According to available information, the bus belonged to the Dutch company Hartemink and was on a chartered excursion trip for the tour operator Oad. The tourist group set off on a trip to Austria at the beginning of the week, and a one-day excursion to Switzerland was scheduled for Thursday. The investigation into the causes of the accident is ongoing. Swiss authorities promise to publish more detailed information about the number of fatalities and injuries after the notification procedure for relatives is completed.