LINCOLN -- A child playing with a lighter has been blamed for a fire that damaged a duplex in northeast Lincoln. The fire was reported around 7:15 p.m. Wednesday at 4032 North 56th Street. Lincoln Fire and Rescue Battalion Chief Eric Jones says it took firefighters about 15 minutes to control the blaze and keep it from spreading from the room in which it started. Residents safely fled the burning unit. The adjacent unit sustained smoke damage.