Sheriff’s officials say rescuers found Chad Van Zuilen underneath his snowmobile that was partially buried by snow during last weekend’s blizzard. They spotted the ski of his snowmobile in Webster Township. The 37-year-old firefighter was pronounced dead at Northfield Hospital early Sunday.

Sheriff Troy Dunn says the emergency room waiting area was filled with law enforcement officers and firefighters hoping doctors would be able to save him. The Hennepin County medical examiner says Van Zuilen died of asphyxia.