The Kaukauna Fire Department said a fire occurred at the local Dollar Tree around 7 p.m. Saturday. The Dollar Tree is located at 321 East Ann Street in Kaukauna. Firefighters said flames were in the center of the building and black smoke was spilling out of the structure. According to Dollar Tree employees, none of their employees or patrons were inside the store when fire crews arrived. The Department commended the actions of store employees who vacated the building and provided crews with that information. Kaukauna firefighters said they were able to stop the fire within 20 minutes with the help of the Little Chute Fire Department. Extensive damage was found to the contents of the store and building structure.