 A 16-year-old male teenager was arrested on Saturday in Boston and is accused of using a knife to rob a group of four people at Boston High School. The Polk County Sheriff's Department says it was called to the scene on 5 p.m. on Saturday and arrested the suspect then. No one was injured in the incident and the investigation into the case is ongoing. If you've enjoyed this segment of Lakeland News, please consider making a tax-deductible contribution to Lakeland Public Television.