Teenager stabbed to death in Kensal Green street
A 15-year-old boy has been stabbed to death in a London street.
The victim, named locally as Quamari Barnes, was found injured in Doyle Gardens, Kensal Green, just before 15:30 GMT on Monday.
The Met has yet to confirm his identity but said his next of kin had been informed. Witnesses are being sought by officers.
A 15-year-old boy was arrested on suspicion of murder on Tuesday afternoon.
He is being questioned by detectives at a north London station.
Ambulance crews treated the boy at the scene and took him to hospital where he was later pronounced dead.
Capital City Academy in Willesden has confirmed the stabbed teenager was a pupil at the school.
A friend of the victim, who did not want to be named, told BBC London Radio: "He was one of the most loved people in the whole of our school.
"I gave him hug and said 'get home safely' and then I come out of school and I see that he's stabbed.
"There's all these teenagers out here running with knives and guns. What's the point? Where does it lead us?"
In a statement, the school said it was "overwhelmed with sadness".
"Our thoughts and prayers are with the family at this very sad time, and also with friends, fellow students and teachers.
"Capital City Academy will be offering a counselling service to students and staff."
Younger children at the school have been encouraged to go home early at lunchtime, while those in years 10 and 11 were given the option to stay for afternoon lessons.
Police have urged anyone with information to contact them.
Det Ch Insp Mark Lawson said: "The area around Doyle Gardens and Uffington Road was very busy at the time of the murder.
"A large number of children were going home from school. I would like to hear from them or their parents as I'm certain that people will have information that could prove vital to the investigation.
"Whilst the motive for this stabbing remains unclear, I would also like to speak with anyone who may have heard about what happened after the attack."