At 938am on Tuesday, December 24th, 2013, The Fond du Lac County Sheriff’s Office responded to the Don Hannemann residence located at N4587 River Rd. in the Township of Byron for a report that the residence was on fire. Fire Departments from the Towns of Oakfield, Lamartine, Brownsville, Lomira, and Eden along with a City of Fond du Lac Ambulance responded to the scene. The residence has sustained heavy damage. There was no one home at the time of the fire. The Red Cross is assisting the family at this time. The cause of the fire has not yet been determined.