The sister of jailed dissident Wang Bingzhang yesterday appealed to the authorities to release him on humanitarian grounds. Wang Mei, 41, said her brother suffered from stomach ulcers and had a family history of cancer. Wang Bingzhang was sentenced at a secret trial this month by Shenzhen Intermediate People's Court to life in prison for plotting terrorist activities including bombing the Chinese embassy in Bangkok in 1996. Wang's family had denied he was involved in such crimes. Ms Wang, who lives in Seattle in the United States, said she spent last week in Guangzhou and Beijing seeking help from American officials. Ms Wang is a US citizen but her brother is not. 'Through US embassy officials, I asked for a meeting with my brother,' she said during a visit to Hong Kong yesterday. 'I am confused as to why I have so far not been allowed to see my brother.' Ms Wang said she had tried to hire a lawyer to handle her brother's appeal. She said that her 55-year-old brother had indicated he wanted to appeal, but the court had not yet set a date. She also claimed the authorities had so far ignored the family's request for medical parole. Ms Wang said her family was devastated by the verdict. Wang's father, Wang Junzhen, 84, was still in shock and his mother, Wang Guifang, 83, was taken to hospital after fainting when she was told of the verdict. The life sentence was also a bitter blow for Wang's four children, including a seven-year-old boy and a daughter, 10. Wang was reported missing by his family last June after he travelled to Vietnam with two friends. He had lived in New York since the 1980s after studying in Canada. Last December, Chinese authorities revealed that he had been taken into custody in Shenzhen after reportedly being rescued from kidnappers by police in Guangxi province.