ROCKFORD, Ill. (WTVO) — A large fire that destroyed an abandoned housing complex at Rockford's Fairgrounds Housing Development on Sunday is under investigation.

Twenty two firefighters from the Rockford Fire Department responded to the blaze, in the 900 block of Acorn Street, around 8 p.m. and found fire coming from the roof of three out of four residential apartments.

Authorities said it took three hours to extinguish the fire.

No one was hurt, and officials said the apartment block was boarded up and not occupied at the time of the fire.

Damages were estimated at $100,000 and officials declared the property a total loss.

The cause of the fire is still under investigation, fire authorities said.

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