Forensic officers have been searching the area around Heron House Three teenagers are still being questioned over the fatal shooting of a 17-year-old boy in south London.
The victim was found dying in a stairwell on a housing estate in Peckham on Wednesday afternoon.
Police are linking his death and the stabbings of two teenagers nearby. One of them remains seriously ill in hospital.
Two 17-year-old boys and an 18-year-old were arrested at the scene and are being quizzed by detectives.
Police said they were investigating whether the violence was gang-related.
The 17-year-old boy, who has not been named, was found bleeding to death on the fourth floor of Heron House on the Pelican Estate at about 1630 GMT on Wednesday.
Post-mortem tests showed he had been shot in the neck and chest.
A second 17-year-old was found with stab wounds in a flat in neighbouring Gannet House and he is still in hospital in a serious condition.
An 18-year-old went to King’s College Hospital with minor injuries and has since been allowed home.
In response to the killing Footballer Rio Ferdinand, who grew up not far from the Pelican Estate, urged the government to do more for young men.
Writing on Twitter the England and Manchester United player said Peckham was “again in the news for the wrong thing” and called on the government to “sort this out please”.
Ferdinand said “a number of things need to change” and young men need real role models, good parenting, respect, drive, opportunities and a “goal in life” as well as something to do.
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