Updated September 4, 2018

Authorities in Athens along with the Alabama State Fire Marshall's Office are investigating a house fire where a body was found.

Firefighters responded to the house on Pruit Street, at the corner of Pruit and Plainview Circle Monday morning and found the house fully engulfed.

Athens Fire & Rescue Chief Bryan Thornton says it's unclear where in the house the fire began.

Found deceased in the fire was Ada Mae Yarbrough, 78. Her body was taken to the Limestone County Coroner.

The cause of the fire is under investigation.