Zac Olumegbon death: Four teenagers guilty of murder
Four teenagers have been convicted of murdering a pupil outside the gates of his school in south London.
Zac Olumegbon, 15, from Brixton Hill, south London, was stabbed to death in front of Park Campus School at West Norwood in July 2010.
Kyle Kinghorn, 18, Helder Demorais, Ricardo Giddings and Jamal Moore, all 17, were found guilty of murder
The Old Bailey found a fifth teenager, Shaquille Haughton, 16, guilty of Zac's manslaughter.
The killers were named after the judge lifted reporting restrictions on publishing their identities.
Zac was stabbed four times, two of the strikes piercing his heart.
Edward Brown QC, prosecuting, said: "He found himself hounded down and killed.
"He had only just arrived at his school that morning. He was killed a matter of metres from it."
The killers, all aged 15 to 17, were thought to be members of the GAS (Guns and Shanks) gang.
Zac was associated with a rival gang, TN1 (Trust No-one).
Mr Brown added: "The reality of the events that were to lead to Zac's death is that it had its origin in the dreadful but certain fact of rivalry between young gangs.
"Needless posturing that on occasion led to violence and occasion serious violence and death.
"It was a tragic and terrible waste of a young life."
In a statement to the court, Zac's mother Shakira Olumegbon said: "The scene that confronted me when I reached the school is indescribable.
"Even though Zac was young, he touched many lives."
She continued: "This is our life sentence. It feels like the 15 years I spent raising my son and all the hopes and dreams I had have been in vain.
"I never thought I would bury any of my children, let alone my baby boy.
"He was snatched away in such a cruel and heartless way."
The killers are due to be sentenced on 21 December.