Waupaca Police and Fire personnel responded to a bomb threat at the Dollar General store just before noon yesterday. When officers arrived, the building was evacuated. The store and the building were then searched, with nothing suspicious being found. As they were investigating, Police Chief Brian Hoelzel says they learned that authorities in West Bend, Campbellsport, and Fond du Lac County were all investigating similar bomb threats made at their own Dollar General stores. The four departments, including Waupaca, are working together to try and determine the source of the threat. Chief Hoelzel says no one is in custody, and no other information is being released at this time.