Knoxville Fire Investigators say they have determined the cause of a house fire in South Knoxville which left a dog dead

Officials say the fire was due to a bathroom wall heater that was left on with combustible materials nearby.

Crews called to the 1800 Block of Beech Street yesterday (Sunday) and found heavy smoke coming from the attic. The occupants were not home at the time of the fire. The home is a total loss. No injuries were reported.

KFD reminding everyone to keep anything that will burn at least 3 feet away from any heating appliances.