(CNN) – Three teens accused in the bullying of a Massachusetts high school student who committed suicide pleaded not guilty to related charges Tuesday. Sean Mulveyhill, 17, Kayla Narey, 17, and Austin Renaud, 18, were not present at Hampshire Superior Court. They entered their pleas through their lawyers. Our Alina Cho has the report. Read … Continue reading Teens plead not guilty in bully case