A 16-year-old boy with "a very bright future" has been stabbed to death in an unprovoked attack by a hooded-gang.
Detective Chief Inspector Andy Chalmers said Ajmol Alom was with a "peaceful" group of fellow Bengalis when he was attacked.
Initial indications are that Ajmol was with four friends. They were peaceful, they were conducting conversations at the location, Spey Street, which is behind me.
There appears to have been an unprovoked attack when the victim received his facial injuries and then Ajmol was stabbed.
More top news
Police have stepped up patrols after a woman in her 40s was "dragged to the ground" in a park in east London.
Families living near Heathrow say they are supporting a group of activists facing jail for chaining themselves to the airport's runway.
Police were called to break up a "large fight" which involved a baseball bat, a man dislocating his shoulder and three arrests.