An American student stabbed or slashed 20 teenagers and an adult in a bloody 30-minute rampage in the classrooms and hallways of a Pittsburgh area high school on Wednesday, officials said. Duration: 01:17
An American student stabbed or slashed 20 teenagers and an adult in a bloody 30-minute rampage in the classrooms and hallways of a Pittsburgh area high school on Wednesday, officials said. Duration: 01:17
