A man has been charged with the murder of teenager Alan Cartwright who was stabbed to death while riding a bicycle with friends.
Joshua Williams, 18, of Davenant Road, north London, will appear tomorrow at Highbury Corner Magistrates' court charged with murder and conspiracy to rob, Scotland Yard said.
An 18-year-old man remains in custody after a warrant of further detention was granted.
A 17-year-old boy and a 21-year-old man who were both arrested in relation to this incident have been bailed.
Police released footage of the moment the schoolboy was stabbed in the chest as he cycled along a busy road in Islington, north London.
He managed to continue riding a short distance after the attack in Caledonian Road last Friday, but collapsed and was later pronounced dead at the scene.
A post-mortem examination found that Alan died from a single stab wound to the chest.