A murder probe has been launched after a teenage boy was stabbed to death in north east London.
The victim, 17, was found suffering knife wounds after police were called to Westbury Road, Walthamstow, at about 9.20pm on Friday.
He was pronounced at the scene just before 10pm. Police are still trying to trace his next of kin.
In footage posted to Twitter, officers were joined by a sniffer dog as they combed the crime scene for evidence.
There have been no arrests.
Anyone with information is asked to contact police on 101 or tweet @MetCC quoting 8357/23Oct. Alternatively, call Crimestoppers anonymously on 0800 555 111.
