Five people were killed and dozens injured in a tourist bush crash near the alpine village of Susch in Switzerland's eastern canton of Graubünden, police said on Friday.
Local police said that emergency response teams had been dispatched to the site of the crash, which took place late Thursday afternoon.
Dutch media reported that the bus was carrying tourists from the Netherlands.
"These are Dutch customers of [Dutch tour operator] OAD. We cannot yet say how many people have been killed or injured," a spokeswoman for Dutch travel association ANVR told the newspaper De Telegraaf.
De Telegraaf reported that 48 people were aboard the bus. The number has not been confirmed by police.
