A mother fled sobbing from court yesterday when a man accused of carrying out the contract killing of her daughter described launching the attack with a brick. Yeung Mui-ying had been sitting in the public gallery listening to alleged hitman Wong Tat-chuen, 32, give evidence at the High Court. But she left in tears as he began to describe how he struck the victim, Choy Sau-han, 27, on the side of the head with a brick. The court has heard that Choy's policeman husband, Raymond Ng Wai-man, 31, hired Wong to help kill her for $150,000. Wong has admitted manslaughter but denies murder. He told the jury he was duped by Ng and his friend Leung Siu-fai into helping with the killing. Ng is not on trial and Leung has fled to China. Wong, an ice-cream seller, said Ng had asked him to help kill his wife as they drank beer on October 12 last year. Then, on the day before Choy was killed, Ng's friend Leung approached Wong, the court heard. He said the plan was no longer to kill the policeman's wife, only to kidnap her for a $1 million ransom. Wong agreed to help, out of 'momentary greed', he said. He and Leung collected Choy in a car and told her they were taking her to have dinner with her husband. As they drove along Tai Po Road, Leung told Wong to 'do the job'. Wong said he shouted out and struck Choy twice on the side of the head with a brick. His aim was to knock her unconscious. But instead she struggled, cried out for help and asked him if he was crazy. Wong said he pinned her down and struck her three or four more times with the brick. The car then stopped. Wong said he searched for his glasses which had been knocked off by the victim. When he found them and put them on he saw that Leung had put a piece of string round Choy's neck and was throttling her. Wong said he struggled with Leung and asked him: 'You're not going to kill her, are you?' Leung told him he had been duped and the plan had been to kill her all along. Wong said he threatened to go to the police but was told this would get him in trouble. He became confused and decided he had no alternative but to help. By that time Choy was dead, he said. The trial continues on Monday.