GREEN LAKE COUNTY, WI (WTAQ) - Human remains found in a house fire in Green Lake County haven’t been identified, but authorities think they are probably those of the 66 year old woman who lived alone there.

The sheriff’s office says the homeowner hasn’t been contacted yet, so the victim of the fire could be her.

Firefighters responded to the scene at about 4 a.m. Monday to find the structure fully engulfed in flames.

While they were fighting the fire, they found the body. An autopsy done yesterday determined the victim died of fire- and heat-related trauma.

The fatal fire is still being investigated.