Vicksburg Firefighter Walter Harris sprays water on remnants of the house at 199 Williams St. Friday. The Vicksburg Fire Department responded to a structure fire at 199 Williams St. at 12:17 p.m. Friday. Vicksburg investigators suspect the fire started from a unattended and illegal fire. According to Vicksburg Fire Investigator Leslie Sanders, the house at 189 Williams St. suffered heat damage on the North side of the home.