Fire crews from Doncaster station were called out to a fire at a club on Thursday night.
Officers attended at 7.45pm and found smoke coming from the first floor at the property on Shackleton Road.
The fire is thought to have been deliberate.
Meanwhile, crews from Thorne station put out a garden fire that had got of control last night.
Officers were called out to Broadway, Dunscroft at 8.28pm and left and 8.55pm.
The fire was accidental.