1996: classroom massacre
Alone gunman entered a school in Dunblane, and shot and killed 16 children and their teacher on 13 March 1996. Another 12 pupils were taken to hospital with injuries. Killer Thomas Hamilton, 43, turned the gun on himself before he was apprehended.
The attack happened as the Year One pupils were about to begin an exercise class in the school gym.
Hamilton (right) opened fire in the school