Up to 10 people believed trapped in mudslide that swept across B.C. highway

Officials believe up to 10 people have been trapped in their cars after a mudslide on a major highway in southern B.C. on Sunday.  

The Heavy Urban Search and Rescue Task Force, a highly specialized team trained to rescue people from major collapses, has been deployed to Highway 7 near Agassiz, B.C., east of Vancouver.

"Our understanding is there were six to 10 people that were trapped," team director David Boone told CBC News in a phone interview just after midnight PT.

He said his team was told some people inside vehicles survived the initial slide.

"We understand there were some people in vehicles that were, through means of communication, were able to alert 911 callers that they were in need of assistance," he said.

At the time of his interview, Boone hadn't seen the debris field in person, but said it's believed to be at least 100 metres wide and 100 metres in length.

"Obviously, it's come from the mountain above, but in the darkness there's no telling how far up the mountain the slope has been affected," he said.

Several mudslides closed the highway near Agassiz on Sunday evening after more than a day of heavy rain.

Dozens of drivers pulled over to the side of the highway after the hillside and road in front of them slid into the valley below. Adam Wuisman and his fiancée were stranded, with one landslide in front of them and another behind.

"Down in the valley, you can actually hear honking and yelling for help," he told CBC News by phone during an interview from the car.

"We must've just missed the first [slide] and now we're between both of them.... There's probably about 200, 300 vehicles pulled over, waiting for some kind of update."

Wuisman, who was driving home to Richmond, B.C., from Nelson, said he hadn't seen any first responders on scene after three hours stuck on the road. 

"I don't think they can get here," he said.

The HUSAR task force, based in Vancouver, was expected to arrive at the scene of the slide around 1:45 a.m.