A two-vehicle crash involving a City of Fond du Lac Fire/Rescue ambulance remains under investigation. The incident occurred at 11:47 Sunday morning at the corner of Pioneer Rd. and W. Johnson St. The driver of the vehicle was taken to the hospital for non-life threatening injuries. The two firefighter/paramedics were not injured, but both vehicles had to be towed from the scene. The Wisconsin State Patrol continues to investigate.