A former senior government official was fined $4,000 yesterday for secretly taking photographs up a woman's skirt with his mobile phone's camera. Chan Yu-sun, 31, a former assistant secretary for Health, Welfare and Food, pleaded guilty in the Eastern Court to a count of disorderly conduct in a public place. Chan, a graduate of the University of Toronto, joined the civil service in 1996 and was appointed to the assistant secretary post last year. He resigned in September last year after he was arrested for taking the pictures of a woman sitting opposite him in a restaurant booth. Fining him, magistrate Allan Wyeth said it was highly unlikely he would repeat the offence. The maximum penalty for the offence is a fine of $5,000 and 12 months in jail. Prosecutor Simon Tam told the court that at about 10pm on September 3 Chan shared a table at the Hey Hey Roasted Meat and Food Restaurant in Wan Chai with a woman, who was eating alone. She saw Chan put his right hand under the table while holding the mobile phone and he appeared to be making some movements for 10 seconds or so. Suspecting Chan had taken photographs, she left the restaurant and called police. Two police officers arrived shortly afterwards and seized the mobile phone, on which they found nine photographs showing the woman's legs. Lawyer Charlotte Draycott said Chan committed the offence due to stress at work and a dispute with his girlfriend.