Fire investigators in Kansas City believe they have their third lumberyard arson in a week on their hands. A huge fire engulfted Schutte Lumber Company Sunday morning, and investigators say it appears to have been set. It will likely take a couple of days of sifting through charred debris to determine the cause. A spokesman for the Kansas City Fire Department, though, say it appears is was started in at least two spots. Authorities from the US Bureau of Alochol, Tobacco and Firearms have joined local authorities in the investigation. The fire destroyed four large, connected two-level lumber sheds as well as parts of two other warehouses and a mobile building that served as a sales office. Officials at Schutte expressed concern after two lumberyard fires in Clay County. Investigators have confirmed those were set.