Knoxville Firefighters were called to the 1600 block of N. Lincoln Street on Thursday afternoon in response to a powerline that was sparking. The power line broke in the middle over the building, causing a small fire that was out before firefighters arrived. Mid-American Energy arrived to fix the line. No injuries were reported. The Knoxville Fire Department was assisted by the Knoxville Police Department, and MidAmerican Energy.