THREE people were injured during a gang brawl inside a Kowloon Tong karaoke lounge early yesterday. Police sources said the fight broke out on the first floor of the Take One Entertainment Club on Kent Road just after 3 am when a 14K triad member bumped into a Sun Yee On member outside the toilet. A quarrel erupted which turned into a fight involving at least one other man. A 38-year-old victim, stabbed with a fruit knife, was taken to Caritas Medical Centre where he was admitted in fair condition. Anti-triad detectives arrested eight men and one woman aged between 18 and 22 after the fight.