Officials investigate deadly California avalanche for possible criminal negligence

Nevada county sheriff said investigation includes learning why the ski trip was not cancelled by the guide company

Authorities are investigating whether any criminal negligence was involved in the deadly avalanche that swept California's Lake Tahoe this week, which killed at least eight skiers and their guides while returning from a three-day backcountry skiing trip.

The Nevada county sheriff's office said on Friday said that they notified the Occupational Safety and Health Administration (Osha), which regulates workplace safety, of the active investigation.