VIGO COUNTY, Ind. (WTWO/WAWV) — Firefighters are on scene of a house fire in southern Vigo County.

The home’s location is on Lazy Lane and Bono Road, just south of Terre Haute.

The fire began around 3 p.m. Wednesday afternoon.

According to Honey Creek Fire Battalion Chief Kevin Murphy, when firefighters arrived they found a single-story residence with heavy fire on a corner of the home. Flames had also spread to the attic of the home.

One firefighter is being assessed for heat exposure as a result of the battle.

The homeowner of the house was not home at the time.

The cause of the fire is still under investigation, but Murphy said they believe it could have been caused by an air conditioning unit.

Both Honey Creek Fire and Riley Fire Departments assisted at the scene.

This is a developing story, follow for updates as they become available.