Police have released the names of the victims in Saturday afternoon’s fatal accident.
The car crash happened around noon near Bondurant.
The Polk County Sheriff’s Office said one car lost control on the icy roads and crashed into another car.
Sixty-three-year-old Pamela McDonough was pronounced dead at the scene. Seventy-year-old Richard McDonough and 65-year-old Michael Lewis remain in critical condition.
Sixty-two-year-old Barbara Lewis is in stable condition.
The accident remains under investigation.