A 15-year-old boy has died days after he was repeatedly stabbed in a north London street.
Perry Jordan Brammer, from Tottenham, was attacked in broad daylight in Willan Road in the Broadwater Farm Estate on Friday morning.
He was found by police and paramedics shortly after 11am and rushed to hospital. He died there on Thursday, Scotland Yard said.
A post-mortem examination will take place next week.
The force said the teenager's killer is believed to have fled the scene on a yellow bicycle, which was later found abandoned in an alleyway.
Three men aged 20, 21 and 24, and a 17-year-old boy, were previously arrested on suspicion of attempted murder but were all released with no further action being taken, police said.
Detective Chief Inspector Neil John, who is leading the investigation, appealed for information.
He said: "This attack happened in broad daylight and we believe there are people out there who know what happened.
"This was a sustained attack which has led to a boy aged just 15 losing his life.
"We are determined to find the individual responsible for this murder and we believe he fled the scene on a yellow bicycle which was later found abandoned nearby in an alleyway.
"We would urge anyone with dashcam footage which may show the attacker or the incident itself to come forward."
The death is the latest in a spate of teenage murders in the capital.
A 15-year-old boy was fatally stabbed in Byford Close, Stratford, east London on Tuesday evening after officers were called to reports of a fight.
Santino Angelo Dymiter, 18, from Plaistow, was stabbed to death in Chadd Green, east London on August 26.
The week before, Amrou Greenidge, also 18, died in hospital after being deliberately knocked off his bike by a vehicle in Fulham and attacked as he lay on the ground on August 18.
Solomon Small, 18, was knifed to death in Brixton on August 15, while just three days earlier Alex Smith, 16, died after being repeatedly stabbed with a machete in Munster Square, Camden.
The number of killings in London has now reached 100 this year.
By the same week last year, the 100 milestone had also been reached. Rising levels of gun and knife crime resulted in 134 killings across 2018, the highest figure in a decade.
