The Ontario Fire Marshal is investigating the cause of a house fire in Hanover. Fire Chief Ken Roseborough says the fire was at 242 4th Street Crescent in Hanover. Firefighters were called to the scene at about noon Sunday, and remained there until 4pm. There were no injuries, and no one was home at the time. The damage was extensive, and is still being added up. The Neustadt Fire Department was called in to assist Hanover Fire Fighters.