The cause of a house fire Wednesday night remains under investigation.
Fifteen Norwalk firefighters responded to the blaze at 4001 Ohio 601 at 8:57 p.m. The Townsend Township Volunteer Fire Department provided mutual aid with a tanker and an engine.
"The fire was determined to have started in the area of the furnace and extended into the attic and adjacent rooms," Capt. Brett Beers said in his report.
"Nobody was home at the time of the fire. It was discovered by a friend who stopped by the house," Chief John Soisson told the Reflector.
Upon arrival, firefighters saw heavy smoke coming from the entire structure.
"We made an offensive attack. They guys were able to crawl around and find and extinguish the fire," Soisson said.
Firefighters had the blaze under control in about 15 minutes.
"(We) initiated an interior attack using a 1 1/2-inch land line. (We) made entry through the front enclosed porch area, encountered heavy smoke conditions once inside and located the fire in the rear of the structure," Beers said in his report.
Fire crews extinguished the blaze, ventilated the roof top and overhauled the building.
The house is considered a total loss. Firefighters estimate there was $77,000 worth of property damage and all the contents valued at about $25,000 were destroyed.
Soisson said the residents aren't able to live in the house. It's unknown where they are living.