A gang of teenagers took a taxi to South Harrow to stab a 19-year-old in an "unprovoked" and "senseless" knife attack, a court has heard.
Four boys, including two aged 14, allegedly took a minicab from an estate in Hendon to Harrow and made the driver wait as they murdered another teenager - Hussein Ahmed.
Mr Ahmed was stabbed once in the back outside the Kababish takeaway, in Northolt Road, near South Harrow tube station, on Friday November 18 evening.
During a trial at the Old Bailey, it was alleged the group then returned to the waiting cab, after seven or eight minutes, and told the driver "Drive, boss".
Two 14-year-olds and a 16-year-old, who was 15 at the time, are on trial at the Old Bailey, accused of murder, wounding with intent and attempted wounding with intent.
They are also charged with conspiracy to cause grievous bodily harm.
The boys, who cannot be named because of their ages, deny the charges.
A fourth alleged attacker aged 16 fled the country and is wanted by police, the court heard.
The victim, Mr Ahmed, had been riding his bike when he suffered massive blood loss from the knife attack and fought for his life for days in hospital, but was pronounced dead on Wednesday November 23 after his life support was withdrawn.
Another boy was stabbed in the arm and stomach while a third narrowly avoided injury as an attacker slashed the sleeve of his jacket.
Prosecutor, Anthony Orchard QC, told jurors: "Sadly, this case is about the death of another young man who lost his life to a senseless stabbing which took place on a street in London.
"On Friday November 18 last year, shortly after 5pm, Hussein Ahmed was stabbed once in the back. The attack was unprovoked.
"Hussein Ahmed was treated close to the scene of the stabbing.
"Passers-by, police and paramedics tried to stem the blood loss.
"Sadly, he died three days later."
The trial continues.
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