Former world tennis number one Andy Murray reveals for the first time in a new documentary that he suffered from breathing problems and anxiety following the Dunblane School massacre. The 32-year-old and his older brother Jamie were pupils at the school in Scotland where on March 13, 1996, Thomas Hamilton shot dead 16 children, aged five and six, and a teacher in the gymnasium.

Andy Murray, then eight years old, had been on his way with his classmates to the gym when Hamilton - armed with four handguns and 700 rounds of ammunition - opened fire. He was ushered away and told to hide under the windows of the headmaster's office whilst Jamie, who is 15 months older, was in another classroom.

Murray has rarely spoken about the massacre and did not want to be filmed talking about it. But the documentary 'Andy Murray: Resurfacing' includes a voice-note that the three-time Grand Slam champion and two-time Olympic gold medalist sent to filmmaker Olivia Cappuccini.