Detained former Taiwanese president Chen Shui-bian has asked his successor to overturn a court ruling that bars his daughter from leaving the island. In a letter to President Ma Ying-jeou, Chen appealed to him to 'save my daughter', who he said could kill herself and her three children. Chiang Chi-ming, chief secretary of Chen's office, confirmed yesterday that Chen was troubled that his daughter, Chen Hsing-yu, was prohibited from leaving Taiwan after admitting perjury. His daughter went to see Chen at Taipei Detention Centre, where he has been held since late December on charges of corruption. She complained that the court order would mean she could not attend a dentistry graduate programme in the US. She asked her father to do something to help, but he could only ask her to be patient. Mr Chiang said: 'Former president Chen couldn't sleep well and has lost his appetite because of his daughter's problem.' He added that Chen finally decided to write to Mr Ma to seek help. Mr Chiang said Chen told him he was afraid his daughter could commit suicide, and even kill her three sons. Chen, along with his wife, Wu Shu-chen, has been charged with embezzlement, taking bribes and money laundering. He denies the charges and says the prosecution was politically motivated. Yesterday, Mr Ma's office said it had yet to receive the letter, while Justice Minister Wang Ching-feng said the case needed to be dealt with according to the law.