A US schoolboy has shot dead nine people - seven of them in a rampage through a school that ended when he apparently killed himself. The juvenile gunman, thought to be a local teenager, also killed two of his grandparents, authorities said. At least 12 others were hurt in the violence at Red Lake High School, on an Indian reservation in the northern state of Minnesota, the FBI said. It was the deadliest US school shooting since the Columbine killings in 1999. BBC News Again.