An ambulance officer accused of killing his wife for a $1.1 million insurance payout told a court in a videotaped police interview yesterday how they had chatted about routine family matters - four hours after the alleged time of her death - and that he had found her body after returning from jogging. Leung Wing-sing, 46, has pleaded not guilty to murdering Lau Siu-han on September 30, 2003, at their home in Western District. He was arrested the same day, after reporting his wife's death to the police. In the police video shown to the court, Leung told officers an intruder had killed his wife while he was out jogging. 'It's ridiculous. My wife just died and you arrest me,' Leung told the arresting officer, Weng Tak-chun. In the video interview he told police he had got up at 5.30am to prepare breakfast and iron clothes for his children because he was on sick leave. Leung said he did some reading and then went out to exercise after his daughter and son left for school about 7.15am. He said his wife was still asleep. But prosecutor Paul Loughran earlier told the court medical evidence showed Lau had died at 3am. In the video, Leung says that while he was reading in the living room, she got up and asked him where the children were. He had told her they had gone to school already. Leung claimed his wife talked quite a lot about family matters, including where their daughter's exam certificate was. 'We even talked about having breakfast together before she went to work,' he is heard saying in the interview. Leung said he returned at 9.30am and found his wife's body in bed with a towel round her neck. He then made a 999 call for help. Mr Loughran told the court earlier that Leung had been having an affair since 2002 and had killed Lau by drugging her with four sleeping pills then strangled her the next morning. A possible motive was so he could pocket the $1.1 million insurance payout. The case continues today before Madam Justice Clare-Marie Beeson.