The cause of a house fire in the Camelot Complex, north of Camdenton, is under investigation by the Mid-County and State Fire Marshal offices. Mid-County Chief Scott Frandsen says the call to #40 Round Table Drive was received shortly after 9:00 Tuesday morning and, upon arrival, flames were showing through the single-story wood frame residence which was about 30-percent involved. Firefighters from Mid-County and Osage Beach were able to bring the blaze under control in about 20 minutes. The residence, which was unoccupied at the time, suffered what was described as extensive heat, smoke and water damage. There were no injuries and personnel were on the scene for about two hours.