From a news report:
Chattanooga Fire Fighters were called to 2305 David Lane at 0159 am on a reported house fire.
Heavy fire and smoke was apparent upon arrival and hose lines were used to quickly contain the fire. No one was at home at the time of the blaze, but the extent of fire and smoke damage was heavy throughout the home.
Investigators are still trying to determine the cause of the fire. Chattanooga Police Department, Hamilton County EMS and Hamilton County Rehab were called to the scene for assistance.