(Radio Iowa) –The Buena Vista County Sheriff’s office has released more information about a fatal accident on Storm Lake. The two people who died when a car broke through the iced-over lake late Sunday afternoon are identified as 40-year old Zackary Newlon, of Anthon and his 8-year old son. Two of Newlon’s other children, a 9-year-old girl and a 5-year-old girl, were airlifted to a Sioux Falls hospital. Buena Vista County Sheriff Kory Elston says their prospects for surviving “look positive.”

Elston says the family came to Storm Lake to play at an indoor waterpark Sunday afternoon. He says investigators don’t yet know why the man decided to drive out on to the nearby lake after leaving. The car was seen driving slowly before it became submerged in the freezing water, a quarter-mile or farther from shore. Elston says rescuers found the wet children on the ice, and the father was in the water. Rescuers used sleds to get the family to the shore.