Neither residents nor firefighters were injured in an early morning fire Thursday that is under investigation.

The Racine Fire Department was called at 5:07 a.m. to the 1600 block of Flett Avenue for a report of a fire called in by a Racine police officer on patrol in the area. The officer attempted to find out if anyone was home, but the owner/occupant was not there.

Firefighters discovered the fire in the basement had it extinguished in 25 minutes. Most of the damage – estimated at around $7,000 for both the home and its contents – was contained to the basement though there was soot and smoke damage throughout the rest of the structure as well.

There were no injuries, and the cause of the fire remains under investigation.