A fourth teenager has been charged with the murder of a 17-year-old boy in east London.
Lord Promise Nkenda - known as Promise - from Newham was found dead in Goldwing Close, Canning Town, at about 20:40 GMT on 14 February.
A post-mortem examination revealed he died from stab wounds to the chest.
The accused teenage boy, also 17, was arrested days after the attack but has now been charged. A trial will start on 13 August at the Old Bailey.
Three boys, two 17-year-olds and 14-year-old, have already been charged with murder.
An 18-year-old man arrested on suspicion of murder has been released on police bail.