Two people from Boston who disappeared while snowshoeing at a park in Alberta, Canada, are believed to have died in an avalanche, Royal Canadian Mounted Police said Wednesday.

Cpl. Curtis Peters of the Royal Canadian Mounted Police said the agency is not releasing the identities of the pair, who were snowshoeing in an area north of Lake Louise in Banff National Park when an avalanche took place.

The victims' families have been notified, police said.

Staff at the lodge in Field, British Columbia, where the two were staying, said they noticed that the pair did not check out or contact hotel employees by the evening. Staff members contacted the mounted police, who made preparations for a search.

Employees with Parks Canada and the police found the vehicle the pair rented and concluded that they had been caught in an avalanche which happened nearby, Parks Canada said in a statement.

Avalanche risk is high in the area right now, Parks Canada said.

"The thoughts of all of Parks Canada staff are with the family and friends of these individuals and we are making every effort to get into the area and conduct a search as safely and efficiently as possible," the statement read.

Staff members at the hotel, which USA TODAY is choosing not to identify out of privacy for the families, said their thoughts and prayers are with the families as well as those who are out searching.

Search efforts, coordinated by Parks Canada, are being hampered by weather and the risk of further avalanches, Peters said.