Kris Donald’s murderer, Imran ‘Baldy’ Shahid has been ordered to serve a further 20 months on top of a 25-year sentence.
The southside race hate killer attacked another prisoner with a metal bar while serving his sentence at Perth Prison.
Shahid was the ringleader of a gang which killed the 15-year-old in 2004. Kriss was abducted in the Pollokshields, stabbed several times, and then set on fire.
He admitted attacking Patrick Sandeman in Perth Prison on August 5, 2014.
Shahid (39), who is now in HMP Grampian, will serve the 20 months after his minimum 25-year term has expired.
Passing sentence at Perth Sheriff Court, Sheriff William Wood told Shahid: “Assault with a weapon is always taken seriously and striking someone on the head with a metal bar will inevitably attract a prison sentence.”
Shahid had claimed in court he carried out the attack after hearing about a plot to attack him inside Perth Prison.
The court heard that the metal bar came from gym equipment he was allowed to have inside his cell.
He was seen on CCTV leaving his cell with the pole, before grabbing Sandeman and assaulting him.
Prison officers pulled the men apart after which Shahid threw the metal pole into a bin and walked off.
Last year judges ruled that Shahid, who has spent many years in segregation, had been unlawfully kept in solitary confinement for a total of 14 months.
They ruled this had violated the European Convention on Human Rights but said he should not be eligible for damages.