Samang Chaisorn, the teenage gunman’s aunt, described the boy as quiet and reserved. Police said he killed his grandparents at home before heading to school, where he killed two teachers and three other school staff members before turning the gun on himself. Scroll to continue reading Follow Stomp on WhatsApp and Telegram“He wasn’t particularly cheerful; he was just very quiet,” she told The Straits Times. He described the teen as quiet and reserved, adding that he rarely spoke during the rides. Preliminary information indicated he brought it to school inside a bag.