Disturbing cause of death for 9 skiers killed in devastating Tahoe avalanche revealed months after tragedy

The nine skiers killed in a horrific avalanche near Lake Tahoe in February all died of asphyxiation — as police wrapped their investigation into the devastating disaster.

The nine skiers killed in a horrific avalanche near Lake Tahoe in February all died of asphyxiation — as police  wrapped their investigation into the devastating disaster.