Three skiers who had flown by helicopter to a remote mountain range were swept away by an avalanche and likely killed under the weight of dozens of feet of snow, Alaska State Troopers said Wednesday.

While Alaska troopers have not been able to assess ... others died in a helicopter crash during a heli-skiing tour near Knik Glacier, in the Chugach Mountains just north of Anchorage.

While Alaska State Troopers had been unable to assess the site ... Czech billionaire Petr Kellner and four others died in a helicopter crash during a heli-skiing tour near Knik Glacier, in the Chugach ...

An avalanche in the Alaskan backcountry buried three skiers under at least 40 feet of snow, Alaska Wildlife Troopers ... during a heliskiing tour near Knik Glacier, in the Chugach Mountains ...

GIRDWOOD, Alaska (AP) — Three skiers who had flown ... others died in a helicopter crash during a heli-skiing tour near Knik Glacier, in the Chugach Mountains just north of Anchorage.