Judge condemns 'cold-blooded' assault on Stanley Prison's chief superintendent A prisoner who attacked Stanley Prison's chief superintendent with a makeshift knife was yesterday sentenced to 41/2 years' jail on top of a 38-year term he was already serving for multiple offences. The sentence was imposed on Ho Yuk-wun, 43, for wounding with intent and assault occasioning bodily harm, in what District Court Judge Peter John Line described as a 'cold-blooded' attack. Ho, who pleaded guilty but disputed the facts, threw a tantrum and shouted at the judge during the sentencing, after claiming he had been abused in prison. The court heard the attack took place during an interview with two visiting justices of the peace on January 26 last year. Ho lunged at chief superintendent Cheng Man-wai with the knife, inflicting a one-centimetre cut to the officer's head. He also threw powder made by scraping the prison's cement walls into the face of Wu Shun-on, a chief officer. In August last year, Ho had tried to kill himself and in 2003 had stabbed a fellow prisoner repeatedly with another makeshift knife, causing the man to become a paraplegic, the court heard. Before handing down the judgment yesterday, Judge Line gave Ho the opportunity to address the court. Ho said he had not been allowed to cover himself with a blanket while he slept, was prevented from ordering extra food at Christmas when he was rightfully entitled to, and was not allowed to watch TV. Then he started shouting at the judge and demanded to be taken back into custody without waiting to hear the sentence. Judge Line acknowledged that Ho's treatment in prison could have prompted the attacks, but said his action was malicious and cunning and aimed at 'challenging the officers' exercise of duty'. 'You were imprisoned ... and harbouring a grudge against the officers. So you devised a means of attacking them,' he said. He also did not believe a claim by Ho that the makeshift knife, a piece of sharpened aluminium, was not his but had been sitting in an envelope on the superintendent's desk. The judge said the weapon could have injured Mr Cheng's eyes, adding that Ho had been involved in six previous cases of wounding with intent. 'You said you suffered depression, but you had been treated at Siu Lam Hospital and had recovered. 'Your antisocial personality explained why you committed the offences and there was no other [reason],' Judge Line said.