A TEENAGER who was part of a gang which forced four boys and a girl to go to a hillside, and held them there until the early hours of the next day, was sent to a training centre yesterday. Leung Siu-cheong, 18, was found guilty last month in the District Court of false imprisonment, assault occasioning actual bodily harm, robbery and indecent assault. He denied the charges. His counsel, C. Y. Li, told Judge Whaley that Leung had committed the offences because of the influence of his peers. The court heard that Leung had a previous conviction for attempted theft and had been fined for that offence last year. Prosecutor Alan So said Leung and three others imprisoned three 15-year-old boys, a 16-year-old boy and a 15-year-old girl between August 24 and 25 last year on a hillside behind Tsz Wan Shan Estate, Tsz Wan Shan. The court heard that the victims were chatting and drinking at a shop at about 11 pm on August 24 when they were forced to go to the hillside. They were held until the early hours of the next day. Leung and his friends robbed some of the male victims of cash and personal belongings. The boys were also punched and kicked by Leung and another teenager. The girl was taken to another part of the hillside where she was indecently assaulted by Leung and two others. Three other defendants were sentenced last month.