A south side duplex suffered $30,000 in damage Sunday after a fire started on the first floor of one of the units.

Racine firefighters responded at 6:17 p.m. to a home in the 3200 block of Republic Avenue for a report of a fire. When crews arrived, they found a fire that apparently started on the exterior and moved up to the second floor exterior while also igniting the interior of the unit.

RFD Lt. Michael Moss confirmed in a written statement that firefighters had the flames extinguished in a few minutes, and WE Energies shut off power to the unit.

The residents of the home recently moved out. There were no injuries, and the cause remains under investigation.