Oswego Fire Protection District officials are continuing to investigate the cause of a fire Sunday morning that damaged a large outbuilding and two attached apartments in the 2200 block of Highway 31 in the unincorporated township of ‘Oswego.

In a statement, the fire district said firefighters were called to the blaze at 8 a.m. on June 12 following a report of smoke detectors going off and the smell of smoke in one of the apartments.

At 9:09 a.m., firefighters, assisted by firefighters from other fire departments in the area, brought the blaze under control.

Firefighters and investigators remained on site until 12:30 p.m.

No civilians or firefighters were injured as a result of the fire, which rendered both apartments uninhabitable.

A dollar loss has yet to be determined, according to the fire district.

Firefighters from Aurora, Naperville and Bristol-Kendall, Plainfield and Sugar Grove fire districts, along with the MABAS Division 15 Fire Investigation Team assisted Oswego firefighters on the premises.

Firefighters from Bolingbrook and the Montgomery and Countryside Fire Districts provided cover to the Oswego Fire Stations during the fire and its immediate aftermath.