Police this evening named the victim of the fatal Preston Road stabbing as 16 year old Drekwon Patterson from the Wembley area.
Police said next of kin have been informed and a post-mortem examination will take place in due course
They said that homicide detectives from Specialist Crime are leading the investigation and as yet no arrests have been made with enquiries continuing.
Chief Superintendent Sara Leach, in charge of policing in Brent, said:
It is another tragedy that a boy of just 16 years old has died as the result of a knife crime.
My thoughts are with his family at this time and my officers, alongside homicide detectives, are doing everything they can to identify and arrest those responsible.
There will be enhanced reassurance patrols in the Preston Road area as I know the local community will have been deeply affected by the death of a teenager.
I would urge anyone who witnessed any of the events leading up to the stabbing, or knows anything about who did it, to contact police immediately.
Anyone with any information is asked to call police on 101, quoting CAD 8167/18Feb, or information can be given anonymously to Crimestoppers on 0800 555 111.