Six people who subjected a man with mild mental disability to two days of violent and humiliating torture were jailed for up to 31/2 years yesterday. The assailants - including four who were also mildly retarded and one with learning difficulties - inflicted injuries requiring three days of hospital treatment on their 34-year-old captive, who befriended them in a park. The attackers - led by retired civil servant Lam Chi-ming, 49, whose flat they frequented - took turns beating their victim as well as forcing him to do menial housework and eat dog faeces, the District Court heard. The assaults took place at Lam's flat in Tin Wan Estate between November 23 and 24 last year, in what Judge Stanley Chan Kwong-chi described as 'a regrettable and distressing wounding case'. Lam was jailed for 3? years on one count of false imprisonment and one of causing grievous bodily harm, to which he had pleaded not guilty. Tsui Ka-yin, 18, and Yip Chui-hai, 26, both women, and Ng Ka-lok, 21, who had also pleaded not guilty, were convicted of the same charges. Tsui was sent to a rehabilitation centre, Ng was jailed for 30 months and Yip, who was also convicted of perverting the course of justice, received 39 months. Lai Ka-lung, 29, and Lo Cho-keong, 18, who earlier pleaded guilty to wounding and false imprisonment, were sentenced to a training centre and rehabilitation centre, respectively. In passing sentence, Judge Chan said the verbal and physical assaults and insults had probably crushed the victim's dignity and self-esteem. The victim sustained multiple wounds on his body and face from their beatings with a belt, a chair, slippers, a floor mop and cigarette butts. The judge said the case might have gone undetected but for a fight among the gang as a result of which Lai reported to the police and Yip told the others to point the finger at their 'godfather' - Lam. Judge Chan said the court was obligated to pass a deterrent sentence on defendants who had no respect or care for the disadvantaged. The court heard earlier that the jobless victim met one of the defendants while scavenging near a park and they hung out till late at night. The defendants then refused to let the victim go home, and took him to Lam's flat to do housework for him. They started beating him after accusing him of molesting the two female defendants.