A $5,000 reward is being offered for information leading to the arrest and conviction of the person responsible for a house fire just over a week ago in Orrville.  The fire was reported on Sunday, September 24th, at around 1am, at a vacant mobile home on North Millborne Road.  Investigators with the State Fire Marshal’s Office later ruled the cause of the fire to be arson.  Anyone with information on who might have started the fire can use the State Fire Marshal’s toll free tip line.