The Press Association: Shot teenager 'was trying to escape gunman': "teenager was shot dead as he ran through a housing estate in south-east London trying to escape a gunman, neighbours said.
The 17-year-old victim died in a stairwell at a block in Peckham on Wednesday afternoon.
Witnesses said he was desperately banging on the closed door of one eighth-floor flat before the fatal shot rang out. Two other teenagers, one aged 17 and another 18, suffered stab wounds as a group of young men ran amok on the estate.
Detectives from Scotland Yard's Trident unit were investigating whether the murder and stabbings took place during a clash between rival gangs.
Three male suspects, all believed to be aged in their teens, were arrested at the scene and were being questioned at south London police stations....