Sheboygan fire crews are investigating today after an overnight fire damaged a home. Dispatchers got a call around 3:10 am on Tuesday of a fire at a home on the 1600 block of North 4th Street. Fire crews arrived to find a significant fire on the back side of the home. The resident who made the call told firefighters he was the only person inside, and crews moved in to put out the flames. Crews had to be on scene for a number of hours after the fire reached an overhead transformer. Alliant Energy was called out to handle the blaze. Fire crews then spent time opening up the walls of the home to make sure that there were no hot spots left inside. Battalion Chief Keith Risse estimates around $65,000 worth of damage was done to both the home and its contents. No one was injured. The fire remains under investigation.