Henry County officials have opened an investigation into a house fire that left a woman injured and her husband and daughter dead in Stockbridge on Monday morning.

Firefighters were called to a single-story home on Mimosa Drive around 6:30 a.m., according to a county spokesman. At the scene, fire crews found flames showing from the back of the home.

As the crews got to work, they learned the home might still be occupied, the spokesman said. The woman was found inside the garage and immediately rushed to the hospital for burn treatment.

After “an aggressive interior search,” the spokesman said, two people were found dead. They were later identified by the county coroner’s office as Robert Floyd, 87, and his daughter, 56-year-old Tracy Floyd.

A neighbor who said she’d known the family for most of her life described the victims as “very friendly people.” Video footage from the scene showed smoke damage around nearly all of the home’s windows, and investigators said about half the structure had been burned, Channel 2 Action News reported.

The Stockbridge fire marshal is investigating the cause of the blaze with assistance from the state and county fire marshals, the spokesman said. Investigators have not determined if the home had working smoke alarms.

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