A 13-year-old boy has been charged with murdering Paul Erhahon, who was fatally stabbed near his home in east London.
Paul was stabbed to death on Friday night
Paul, aged 14, died in his mother's arms outside the house in Leytonstone, after the attack on Friday night.
His 15-year-old friend was also seriously injured in the incident and is in a stable condition in hospital.
Two 14-year-olds arrested in connection with Paul's death remain in police custody. Another suspect, aged 19, has been released on police bail.
The 13-year-old, who is also accused of attempted murder and grievous bodily harm, is due to appear before Waltham Forest Youth Court later on Tuesday.
A post-mortem examination found Paul had died from a stab wound. Police have not recovered the weapon used.
The latest attack follows the killing of at least five other male teenagers in London in the past two months.
Paul went on to attend Kingsford Community School - the same school as 15-year-old Adam Regis, the nephew of athlete John Regis, who was stabbed to death last month.
Police have said they are not linking the two fatal stabbings.