The poor boy has now been named.
A teenager who died after being stabbed outside a Tube station has been named.Malcolm Mide-Madariola, 17, from Peckham, was attacked in Balham Hill outside Clapham South station, London, at about 16:25 GMT on Friday.
He died in hospital following the stabbing which police said happened after "an altercation between two small groups of young males".
No arrests have been made as part of the murder investigation. Malcolm's next of kin has been informed.
Det Ch Insp John Massey said he "didn't believe" anyone involved had travelled on the Tube.