CCTV images released today show the moment before an innocent teenager is murdered, because his killers mistakenly thought he was a member of a rival gang.
Kwame Ofosu-Asare wasn't.
But he was stabbed to death on a housing estate in Brixton.
Today his killers were jailed for life.
Some of you may be upset by some of the images in this report by Piers Hopkirk.
Nathaniel Okusanya, received a life sentence with a minimum term of 20 years.
Nelson Idiabeta, detained at her majesty's pleasure, received a minimum term 19 years
Passing sentence his honour Judge Marks QC told the two teenagers:
"You have shown not one iota of remorse, both of you seeking to brazen it out in front of a jury."
The court heard that the attack had its roots in a feud between the TN1 (Trust No-One) gang from the Tulse Hill area of south London and Brixton-based GAS (Guns and Shanks).
Idiabeta and Okusanya were members of the TN1 group out to avenge one of their number who had been stabbed in a bus garage attack carried out by the GAS gang earlier in the day.
Kwame's father Kwaku, a sports journalist, told the court in a statement that his son was full of potential.
He was in the sixth form of Forest Hill School and excelled in sport, music and acting and was ambitious.
Mr Ofosu-Asare said: "Kwame was a very vibrant, energetic and enthusiastic boy.
"His brother and sister are struggling to cope with his death. All our lives have been ruined."
He added that Kwame was not a member of either gang. He had been to a recording studio in the area.
Kwame was stabbed repeatedly in the back and received a total of 14 wounds while walking in Adelaide Close with a friend.
The killers tried to get away by going into a side road where the friend's aunt lived, but the aunt was not home and they were trapped in a cul de sac.
Two teenagers have been given life terms for murdering an innocent schoolboy.
Kwame Ofosu-Asare, 17, was mistaken for a rival in a "poisonous and senseless" gang war.
He was knifed to death in broad daylight while he was walking with a friend through the Moorlands Estate in Brixton, in March.
Nelson Idiabeta, 18, of no fixed address, and Nathaniel Okusanya, 19, of Vibart Gardens, Lambeth, south London, were found guilty of murder.
Sentencing them at the Old Bailey, Judge Richard Marks ordered that Idiabeta serve a minimum term of 19 years and Okusanya, 20 years.
Two teenagers are facing life terms after being convicted of murdering an innocent schoolboy who was knifed to death.
An innocent teenage boy was stabbed to death when two youths involved in a "poisonous and senseless" gang war mistook him for one of their enemies, a jury heard today.
Kwame Ofosu-Asare, 17, became caught up in the poisonous and senseless gang war when he was mistaken for a rival.
He was killed in broad daylight while he was walking with a friend through the Moorlands Estate in Brixton, south London, in March.
Nelson Idiabeta, 18, of no fixed address, and Nathaniel Okusanya, 19, of Vibart Gardens, Lambeth, south London, were found guilty at the Old Bailey.
They were remanded in custody for sentencing tomorrow.
A jury's heard how a 'poisonous and senseless feud' between two gangs cost an innocent teenager his life. 17 year-old Kwame Ofusu-Asare was stabbed to death in broad daylight in Brixton. Today, two men went on trial charged with his murder. From the Old Bailey, Ronke Phillips reports.
An 18-year-old man has been remanded in custody charged with the murder of a 17-year-old boy in Brixton.
Kwame Ofosu-Asare was found with fatal stab wounds on the Moorlands Estate on the evening of March 2nd.
Nathaniel Okusanya, who's from Lambeth appeared at Croydon Magistrates' Court today accused of killing Kwame.
He is due to appear at the Old Bailey in July.
An 18-year-old man has been charged with the murder of a 17-year-old boy in south London.
Kwame Ofosu-Asare, of Catford, was found with fatal stab wounds in Adelaide Close, in Brixton, on the evening of 2nd March.
Nathaniel Okusanya, of Lambeth, is due to appear at Croydon Magistrates' Court tomorrow charged with his murder.