A West Branch teenager will face arson charges in adult court. 17-year-old Travis Lang is accused of setting four fires in West Branch over the weekend. Police Chief Dan Knight says a firefighter spotted Lang near one of the fire scenes.Lang faces arson, burglary, weapons & drug charges. He allegedly set two homes, a grain elevator and a tractor-trailer on fire. Knight says evidence at the scene matched items Lang had on him when arrested. He says drugs or alcohol may have been involved.On Monday, a judge ordered Lang held on 325-thousand dollars bond.