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MONTGOMERY COUNTY, Tenn. (WKRN) – A house went up in flames Friday morning, killing a family of three.

Emergency responders were alerted to the fire as people driving to work saw flames shooting from the house and called 911.

Firefighters got the call about 7:50 a.m. When they arrived to the house on Jim Taylor Road, it was engulfed in flames.

Family members told News 2 the couple used a wood stove to heat their home. Investigators say that may have caused the fire.

“We couldn’t make entry because of the flames so we started a defensive attack. Once we started knocking the flames down we started making entry. We located two bodies at this time. We are still looking for the third,” said Jerry Buchanan, the County Fire Chief.

Fire investigators said the victims were 72-year-old Lloyd Black Sr., 70-year-old Zelda Davis and their daughter, 49-year-old Susan Black.

“We located two in the bedroom. According to the son, the mother slept in one room and the father slept on the couch and the daughter slept in a back bedroom,” said Buchanan.

Fire investigators stated that at this point, they haven’t been able to determine whether smoke detectors were working.

County fire Chief Jerry Buchanan told News 2 family members are heartbroken.

“The sheriff’s office talked to him [the victims’ son] first and they were the first ones to talk to him. It’s rough. Anytime you have a fatality especially around the holidays, it just seems like it’s worse,” said Buchanan.

The cause of the fire is under investigation by Tennessee Bomb and Arson, but foul play is not suspected.