Aamir Siddiqi murder: Jason Richards and Ben Hope to be sentenced 8 February 2013 Last updated at 06:42 Two "staggeringly incompetent" hitmen will be sentenced later for stabbing to death an innocent student after they targeted the wrong house. The pair had been paid £1,000 each to kill a different man on a neighbouring street. A jury found them guilty of murder last Friday after a four-and-a-half month trial at Swansea Crown Court. Hope and Richards both denied murdering Aamir and the attempted murder of his parents but were convicted unanimously of all charges. Howled The two men have already been told they will receive a life sentence, with judge, Mr Justice Royce, warning that he will set the "substantial" minimum term they must serve at a hearing on Friday at Swansea Crown Court. During their trial, the court heard how Aamir had run down the stairs of the family home at Ninian Road in Roath, expecting to see his imam for a Koran lesson. Instead, he was confronted by Richards and Hope, high on heroin and wearing masks. They wielded daggers over their heads and howled as they set upon the helpless A-level student. Det Sgt Stuart Wales told the court it was "the most distressing incident" he had ever had to attend in 17 years of service. Fellow officer Teresa Sullivan recalled her as inconsolable. She just kept shouting 'My son, my son'. She wanted to see him," she said. Property deal During the trial, the truth emerged that Aamir's killers had carried out a contract killing on the wrong victim, in the wrong house. But on the second day of deliberations, the jury rejected the killers' claims and convicted both men of the murder and attempted murders.