Four people were injured, and dozens left without a home after a large fire broke out at the Hanover apartment complex in SeaTac Saturday night. Firefighters responded to the 3-alarm apartment fire in the 3100 block of South 192nd St in SeaTac around 11:30 p.m. Saturday. Officials say four people were transported to a local hospital, two with critical injuries and two with serious injuries. The injured include two adults and one infant. A spokesperson with Puget Sound Regional Fire Authority says the cause of the fire is believed to be arson. An individual was arrested and booked into King County Jail, they are believed to be a resident of the building. No firefighters were injured.