One person was killed and three others were injured in an avalanche in East Vail, Colo., on Tuesday, according to authorities. All those involved in the accident were believed to be skiers or snowboarders. The three injured, who have not been identified, did not have life-threatening injuries, according to a spokesperson for the Eagle County Sheriff's Office. The person who died has been identified as 24-year-old Anthony Seibert of Boulder and Vail.
