A father-of-three was yesterday charged in Tuen Mun Court with the murder of two Yuen Long schoolgirls aged 10 and 11. Jobless Duong Vinh Cuong, 38, was charged in his absence. He was in a serious condition in Prince of Wales Hospital with severe burns and was unable to appear in court, Prosecutor Ada Cheng told Magistrate Joseph Yau Chi-lap. Vietnamese-Chinese Duong set himself and his three children, aged between one and five, ablaze last Friday by setting light to a gas cylinder before police stormed his house in Pak Sha Village, Yuen Long. Duong was charged with murdering Yim Pui-shan, 10, between December 19 and 20, and Chan Lok-man, 11, between December 4 and 21. 'The defendant is now under police custody [guard] since there is no custody ward at Prince of Wales Hospital,' Ms Cheng said. Mr Yau remanded Duong under police guard and adjourned the case until Friday. Police had gone to Duong's house on Friday night after his sister-in-law phoned police saying he had threatened to kill his three children. He had tied himself to his children in a circle around two gas cylinders, before exploding one. Speaking outside the court yesterday, Yuen Long district police Chief Inspector Paul Renouf said Duong's five-year-old son, Ting-fu, was in a critical condition in Prince of Wales Hospital while his two daughters, three-year-old Yee-lam, and one-year-old Yee-wai, had regained consciousness in Tuen Mun Hospital. Police searched a Yuen Long house on Friday night and found the body of Yim Pui-shan, who had earlier been reported missing, wrapped in a blanket in a wardrobe. The following day, the naked body of another missing girl, Chan Lok-man, was pulled out of a cement-sealed drain next to the same house. Meanwhile, Democratic legislator Andrew Cheng Kar-foo, in a radio talk show yesterday, demanded the police investigate who leaked an alleged police interview with the murder suspect published by several Chinese language newspapers yesterday. The solicitor said public confidence would be lost if officers deliberately leaked statements for personal gain, adding that it would deter people from making statements to police in future. The co-host of the popular Teacup in a Storm morning talk show, Mr Cheng said yesterday's incident was not the first time that police had leaked confidential information to the press. Citing an example, host Albert Cheng King-hon said the Independent Commission Against Corruption had arrested police officers for selling information to the media in the past. He said the lives of the murder victims' families were already in turmoil and the information leak would only worsen the situation. Senior Superintendent Fan Sik-ming of the Police Public Relations Branch said the force would never reveal such information to the press. Speaking on the talk show, he said there were guidelines as to what type of information police could release. He said the force would look into the matter.