THE humiliation of a schoolboy resulted in a revenge killing of a teenager in a case of mistaken identity, a court heard. Sharmaarke Hassan, 17, was shot in the back of the head as he stood with friends in Gilbert s Yard, Camden, in May 2008. Jurors at t

THE humiliation of a schoolboy resulted in a revenge killing of a teenager in a case of mistaken identity, a court heard.

Sharmaarke Hassan, 17, was shot in the back of the head as he stood with friends in Gilbert's Yard, Camden, in May 2008.

Jurors at the Old Bailey heard claims that Didi Parkes, 24, of Chichele Road, Cricklewood, and 22-year-old Chen Shire, from Kentish Town, killed Mr Hassan on the orders of the 15-year-old boy, who cannot be named for legal reasons.

The court was told though the dead boy was not the intended target, the killers probably did not care which member of the rival group died.

Prosecutor, Crispin Aylett, QC, said: "They must have been operating on the basis that any of them would do. The murder was as casual as it was callous."

The court heard the accused 15-year-old had been beaten up by a friend of Mr Hassan, a member of the 'Money Squad' gang, earlier that day.

Mr Aylett said the schoolboy felt he had been 'humiliated' and wanted revenge.

He told the court: "Thinking Sharmaarke Hassan was the boy they were after he was shot in the head.

"His killers probably couldn't have cared less which of the victim's group was shot."

Hassan died four days later from his injuries on May 28, 2008.

The court heard there is no identification evidence or scientific evidence to link Parkes, Shire and the 15-year-old to the killing of Sharmaarke Hassan.

All three either denied involvement or refused to answer police questions.

The court also heard the accused schoolboy, who denies he was in a gang, and his family were forced to move home after receiving death threats following Mr Hassan's death.

All three deny murder.

The trial continues.