Police have launched a murder investigation after a boy who was stabbed in northwest London on Saturday died in hospital.
Officers were called to reports of a stabbing just after 10.30pm in Dudden Hill Lane, Dollis Hill, on 30 May.
Jamal Ringrose, 15, was treated at the scene for stab wounds before being taken to hospital, where he died on Thursday.
Detectives have subsequently launched a murder probe and said Jamal's family have been informed and are being supported by specialist officers.
A 15-year-old boy, who cannot be named because of his age, was arrested on Tuesday.
He has been charged with affray and possession of an offensive weapon in a public place.
He appeared at Willesden Magistrates' Court on Thursday, police said.
A 16-year-old boy and an 18-year-old man were arrested on suspicion of assault and causing grievous bodily harm.
The boy was also arrested on suspicion of possession of an offensive weapon and affray, and remains in police custody, while the man has since been released on bail.
Read more from Sky News:
Andoni Iraola named as Liverpool's new head coach
Brothers jailed after teenage boy run down and killed
Detective Inspector Simon Ager, who is leading the investigation, said the thoughts of the force are with the family and loved ones of Jamal.
He added that: "Our work continues and my team are pursuing several lines of inquiry."
"We believe many people were in the area at the time and ask anyone with information or footage to come forward.
"In particular, we're seeking dashcam or mobile phone recordings from the street at that time.
"No detail is too small or insignificant. Please get in touch. Any footage can be uploaded here."
(c) Sky News 2026: Murder investigation after boy dies following Saturday stabbing
Investigations into Mandelson and Andrew could take more than a year, CPS chief says
Three Royal Navy personnel who died in helicopter crash in Devon named
Melanie Hall: Family of murdered Bath woman who went missing 30 years ago says 'more than one person' knows what happened to her
Andy Burnham says for the first time that he would join Labour leadership contest
Man in his 50s taken to hospital after crossbow shooting at University of Surrey accommodation
Andoni Iraola named as Liverpool's new head coach
Labour row breaks out as prime minister's top aide meets female MPs over Mandelson messages
Landlord slams 'unacceptable' TG Jones rescue | Mark Kleinman blog
