The 16-year-old, named locally as Lathaniel, was found injured in Paradise Road at around 2.30pm yesterday (March 4).
Officers and London Ambulance Service crews attended, however, he was pronounced dead shortly after.
A man who said he was the boy’s uncle, who asked not to be named, claimed the gunmen posed as delivery drivers.
He said: “They came on a moped dressed as Deliveroo drivers.”
An eyewitness told BBC London that two boys came down the stairs at a block of flats when the moped rider took out a gun and fired.
The other boy ran away, and the rider sped off, the witness added.
Other relatives, who declined to give their names, described the teenager as a Manchester United fan who enjoyed playing Playstation 5, and had one sibling, a sister.
A resident, who said she knew the boy’s mother, said Lathaniel was “very bright at school” and said his father worked at a nearby go-karting facility.
“He is great at looking after this community,” the woman, who asked not to be named, said.
A crime scene and cordons remain in place, with several police cars and officers stationed nearby.
Another resident who knew Lathaniel said she was distressed to hear the news, saying that her own son had also died in a stabbing a few years ago.
And a young woman who lives nearby said: “This area is not safe at night. There are a lot of teenage boys that cause a lot of trouble who live around here.
“They hang around at night, play around with the cops. Things like playing with fireworks and running from the police. But it can get serious. Someone I know got stabbed some time last year.
“I think about where the cameras are when I am walking at night, but there are no cameras in that area (of the shooting).
Speaking about the shooting, she said the attackers had “no shame as well, there is a primary school next door”.
An older resident who lives nearby said: “This area hasn’t been like this since the 80s.”
Adrian Lindo, 50, who lives nearby, said “I would have thought that the younger generation would have learnt about what has happened in this area in the past.
“They have to learn from the previous generations. My commiserations to the family.”
The death was described as a “life wasted” by Florence Eshalomi, Labour MP for Vauxhall and Camberwell Green.
