Damilola, 10, bled to death from a thigh wound caused by a broken bottle on the North Peckham Estate, south London, in November 2000.
After the murder, the police interviewed lots of teenage gangs in the Peckham area, but they all stuck to a 'code of silence' about the killing.
Two brothers, their 17-year-old friend, and a 15-year-old boy, were eventually charged with murder.