Kwame Ofosu-Asare's father: He was a "sacrificial lamb"
The father of murdered teenager Kwame Ofosu-Asare said his son was a "sacrificial lamb".
The 17-year-old was found with fatal stab wounds on Brixton's Moorlands Estate on Friday.
A 22-year-old man has been arrested after a dawn swoop by officers in south London and remains in custody, Scotland Yard said.
Kwame's father Kwaku Ofosu-Asare said he hoped lessons would be learned from his son's death.
Speaking at Scotland Yard, Mr Ofosu-Asare said: "One thing Kwame detested most was gang crime.
"The irony is that what he didn't like most took away his life. At that tender age, it's heartbreaking."
He added: "I want to describe Kwame as a sacrificial lamb that we can use to address the problem of gang crime in our society.
"All of us are at risk. We have to change the perception that people who die from knife crime belong to gangs."
Kwame, who lived in Catford, south-east London, was en route to hospital when he died in the ambulance.
He and his friend had visited a recording studio in Brixton on Friday and were on their way to the friend's relative's house when they were chased by two young men and assaulted.
Kwame's friend was not injured.
Kwame, a sixth form student at Forest Hill School, had moved from Ghana to London 10 years ago, Mr Ofosu-Asare said.
The budding footballer, actor and musician had recently met England footballer Rio Ferdinand and posted a photograph with the star on Facebook.
Mr Ofosu-Asare, a sports presenter in Ghana, said his son had been due to start a new part-time job at retailer Sports Direct this week.
He said: "Kwame was a boy with multifaceted talents. He was the kind of person who wanted to keep focused and work very hard."
Police carried out a string of raids in recent days as part of a "robust" response to a spate of stabbings in the area.
On Tuesday, officers from Lambeth Borough and Trident Gang Crime Command arrested two men, aged 19 and 23, and two teenage boys, aged 14 and 16, after raiding eight addresses.
They were held for conspiracy to commit grievous bodily harm, but not in connection with Kwame's death.
Ch Supt Matt Bell said: "Lambeth borough is committed to reducing serious youth violence and gang activity and we felt it vital that we take robust and prompt action in order to pre-empt any potential future violence."
Officers are investigating if Kwame's death is linked to another stabbing on Friday when a 17-year-old boy was attacked outside Norwood bus garage, Ernest Avenue, West Norwood, at about 13:15 GMT.