The police were called to a riot on Armitage Road around 9:25 p.m. M. And he found a man who suffered a stab wound.
Police and paramedics tried desperately to save the 18-year-old while he was unconscious, but he bled to death.
The victim was pronounced dead at the scene at 10:03 p.m.
No arrests have been made at this stage and there is currently a persecution in progress.
There is a scene of the crime and investigations continue.
Scotland Yard is requesting witnesses and anyone who has information should contact the Police at 101 citing: CAD 7560/22 October.
A crime scene remains in place and investigations continue.
Scotland Yard is requesting witnesses and anyone who has information to contact the Police on 101 citing: CAD 7560/22 October.
A Met Police spokesman said: "The officers are in the process of informing their families.
"The formal identification awaits and a post mortem examination will be carried out in due time.
"Homicide and the Major Crimes Command have been informed."
According to data published last week, crime with knives has reached its highest level in history with almost 15,000 crimes committed in the last year.
The Office of National Statistics (ONS, for its acronym in English) said that the 14,987 crimes committed with knives in the year to the end of June was an increase of 15 percent compared to the previous 12 months.
It includes 91 knife killings, 170 rapes or sexual assaults carried out with a knife and 8,363 knife-point robberies.
The latest figures will put pressure on the mayor of London, Sadiq Khan, who has been accused of not addressing the knife crime crisis in the capital.
The Tory candidate for the mayor of London, Shaun Bailey, said that Mr. Khan has "lost control of the streets" and has squandered money on an "inflated" bureaucracy.
Mr. Bailey has promised to put 1,000 more policemen on the streets.
However, Mr. Khan struck him back, accusing the conservative Tory of not understanding how the police funding in London works and blamed the Government for a financial contraction of the Met.
He said: "We are doing everything we can, at City Hall, to face this scourge, but I do not apologize for pressing the Government tirelessly to understand that our police service desperately needs more funds at this time."