13-year-old stabbed outside school

Three teenagers chased a 13-year-old boy and stabbed him in the back outside his school gates, a court heard. The attackers, aged 15 and 16, were caught on camera following their victim in Kilburn, west London, before the knife attack on June 14. A second 15-year-old then joined in as the three viciously attacked the ‘helpless’ boy, jurors were told. Jollyon Robertson, prosecuting, said: ‘This case is about a stabbing that took place on the 14 June outside of that…