UPDATE: Thursday -- The fire chief in Pottsville now believe the fire is arson.
POTTSVILLE -- Two firefighters were hurt fighting a fire at a group of row homes in Pottsville Wednesday night.
Fire officials said the firefighters injuries aren't life threatening.
Four homes were damaged along Schuylkill Avenue.
Authorities told us three of the homes are vacant, including the one where the fire started.
Officials are investigating what sparked the fire.