Three people were killed and two people were hospitalized in critical condition following an overnight house fire in South Los Angeles. All of the victims are related, officials said. The home in South LA's Florence neighborhood burst into flames around 11:40 p.m. Monday and a fast-acting neighbor used a garden hose to fight the fire before first responders arrived. Los Angeles County firefighters said they were able to knock down the fire at the home located near the intersection of Compton Avenue and Firestone Boulevard in about one minute. Neighbors told FOX 11 that Walterine Slack, who was in her 80s, lived at her home with her adult children and granddaughter. The home is a total loss and had been in the family for decades.