Mt Airy Firefighters in neighboring Surry County are investigating four early Thursday morning fires. Reportedly, the first fire was called in just after midnight Wednesday with 3 other fires occurring in the same area until 5am Thursday. All the fires were along a business district of South Street in Mt. Airy. The fires included 3 buildings and one vehicle. One of the 3 buildings was totally destroyed by fire. Again, all the early Thursday morning fires in Mt. Airy are being investigated and are believed to be arson.