No-one else has been charged over the attack on Oliver Hemsley
A 15-year-old boy who stabbed a student in a "ferocious" attack, leaving him paralysed from the neck down, has been detained for 10 years.
Nazrul Islam, of Upton Park, east London, repeatedly stabbed Oliver Hemsley, 20, from Ely, Cambridgeshire, in central London, on 28 August 2008.
The Old Bailey judge lifted restrictions on naming Islam because he "took pride" in his violent self-image.
He had earlier admitted causing grievous bodily harm with intent.
Islam robbed a girl of 12 while on bail for the attack on Mr Hemsley in Shoreditch.
Sentencing, Judge Roger Chapple said: "This was an entirely motiveless, mindless attack. Its ferocity makes my blood run cold.
"He [Islam] speaks with a degree of pride about his reputation with the boys, with the local community."
Mr Hemsley, now 21, who had just been accepted to St Martin's School of Art, was attacked as he was walking with a friend.
The victim was kicked and punched by a group of youths.
During this time Islam stabbed him from behind through the heart and lungs, which left him paralysed from the neck down after the knife cut his spinal column.
The court heard that when Islam was arrested hours after the attack he had the victim's blood on his clothes and his DNA was found on the discarded kitchen knife.
But the youth was released on bail as officers waited for forensic tests on the items.
Days later, on 14 September, Islam threatened a girl with "what appeared to be a knife" to rob her of £5.
Islam robbed a girl of 12 while on bail
Following the sentence, the victim's brother Will Hemsley, 26, said: "No sentence could ever be enough.
"In the last eight months we have been through more pain and suffering than any person should have to and unfortunately for Oli and those supporting him it is set to continue for the foreseeable future.
"At the end of this custodial sentence this animal will be free to go on and live his life.
"Unfortunately the same cannot be said for Oli, who has been given a life sentence for no real reason."
Police have been unable to charge anyone else with the attack due to lack of evidence.