SPRING HILL — A pre-dawn fired destroyed a two-bedroom home on Keystone Street on Monday, but no one was injured. Hernando County Fire Rescue officials said they received a 911 call from a neighbor shortly before 4 a.m. and arrived to find smoke and flames coming from inside the dwelling at 10452 Keystone St. A fire official said that because the owners were not at home at the time, the blaze is considered suspicious and is under investigation by the state fire marshal. The owners, who were in Sarasota, arrived on the scene shortly after the fire was extinguished. According to county property records, the house is owned by Anthony and Retta Pickering. Authorities said the Red Cross was called to assist the family.