15-year-old boy has been stabbed to death after a fight broke out close to a high school early on Friday.
One suspect has been detained after police found the 15-year-old victim suffering from multiple stab wounds.
The force were called to Blyth Road, Hayes close to Global Academy to reports of the fight at 8.30am.
Paramedics and the air ambulance were called but despite their efforts to revive him, the teenager died at the scene.
Police said a post-mortem will take place but the boy has yet to be formally identified.
Local MP John McDonnell urged his constituents to come forward with any information on Twitter.
Anyone who witnessed this incident or has information is asked to call police on 101 or Tweet @MetCC quoting reference Cad 1681/11Jun.
To remains 100% anonymous contact the independent charity Crimestoppers on 0800 555 111.