NHL reporter Jessi Pierce and her three young children, all of whom were killed in a house fire last week, were confirmed by the White Bear Lake Fire Department. Pierce died alongside her husband and three children, including her sons Hudson, 8, and Cayden, 6, as well as daughter Avery, 4. The family's dog was also killed. The department is investigating the cause of the fire, which is believed to be arson, and has asked for public assistance during this difficult time.