Sixty-four-year-old Marion County resident Roger Carroll Brown was pronounced dead at the scene of a fully-engulfed house fire at 1656 70th Avenue Tuesday morning. That’s according to the Marion County Sheriff's Office. The fire was ruled accidental after an investigation by the State Fire Marshall. The Melcher-Dallas Fire Department, Knoxville Township Fire Department, Knoxville Fire & Rescue, and Marion County Sheriffs Deputies quickly arrived on scene around 4:30 Tuesday morning. Marion County Dispatchers also assisted by coordinating information during the response. Crews had the blaze extinguished in approximately one hour.