One person is dead after a rockfall struck several hikers in the Banff National Park in the Canadian Rockies.
Another three people were injured, as rescuers continue the search for potential survivors. Authorities are yet to say if anyone is missing.
The Bow Glacier Falls hiking trail is six miles (9 km) long and runs along Bow Lake. It is classified as a moderate hiking challenge.
The conditions of the three people who were taken to hospital were not included in the joint statement released by Parks Canada and Lake Louise Royal Canadian Mounted Police (RCMP).
The rockfall happened on Thursday afternoon north of Lake Louise, a tourist town 124 miles (200 km) northwest of Calgary, Alberta.
