A 29-year-old policewoman hanged herself in her Tuen Mun flat yesterday - the second officer to commit suicide in a week. Constable Leung Siu-chun was found hanging from a window frame in her 17th-floor flat at Block Two, Tuen Mun Town Plaza in Tuen Lung Street, when her 26-year-old sister visited her at about 2.30pm. It is believed she stabbed herself first as officers found blood on the floor. Leung, who had been in the force for about seven years, was scheduled to report for duty at Kwai Chung police station at 3pm. She was declared dead when ambulancemen arrived. A note was found at the scene. Police said a postmortem examination would be carried out this morning. A police source said the initial investigation showed there were no suspicious circumstances and that she had committed suicide because of a relationship problem. Leung was attached to the miscellaneous inquiries sub-unit of Kwai Chung police station where her former colleague, Sergeant Tang Kai-yan, 53, died after shooting himself with his service revolver inside the station on Monday last week. Tang, who was attached to the patrol sub-unit, killed himself because he was suffering from an illness - sciatica. He had received more than 30 commendations for his courage and professionalism during his career. A police spokesman said the force management took a serious view of suicides involving police officers. 'Clinical psychologists, welfare officers and staff-relations officers provide around-the-clock support networks to deal with economic crises and welfare problems among police officers and their family members.' Leung is the sixth police officer to commit suicide this year. Eight policemen killed themselves last year, while six committed suicide in 2000.