Rags soaked with solvent started a fire that caused about $8,000 damage to a vacant office at 3269 S. Main Monday morning.

Fire officials said the building manager noticed the fire when he arrived to work and notified fire officials about 8:20 a.m.The fire was extinguished in less than 10 minutes, but workers in other offices in the building were kept away from their jobs while firefighters examined the vacant office and used fans to clear smoke from the building.