A fight broke out between two triad groups after negotiations over the control of a Tsuen Wan pub broke down yesterday. Eight suspected Wo Shing Wo triad members were injured in the battle while police arrested one of their rival Sun Yee On members. The fight between more than 30 people took place outside the Lion pub in Sha Tsui Road shortly after 2am. Some of the participants were armed with choppers and others used chairs. When officers arrived, two men aged 18 and 23 with chop wounds to their backs, head and legs were on the ground. Another six men aged between 16 and 30 went to Princess Margaret, Yan Chai and Prince of Wales hospitals to seek medical treatment later. Officers arrested a 17-year-old youth at a Kwai Chung karaoke club.