Relatives of a blind activist who fled a 'black jail' where she was held after mainland authorities refused to let her enter Hong Kong for the July 1 rally have been threatened with prosecution if they do not reveal her whereabouts, a Hong Kong-based rights organisation said.
Li Guizhi, 57, was held in an illegal detention centre in Hebei province after she was turned back from the border in Shenzhen.
Li (pictured) was planning to hold a press conference in Hong Kong to demand answers about the suspicious death of her son, a policeman, in 2006. She has been missing since fleeing on Tuesday.
Her nephew, Wang Jianfu, was arrested on Thursday after helping Li flee detention and his parents - Li's younger brother and his wife - are under surveillance.
Li had previously been detained and tortured in illegal detention centres.
Liu Weiping, the chairman of the People's Rights Union of China, which organised Li's trip to Hong Kong for the annual July 1 pro-democracy event, said security personnel were now too powerful to be controlled by Beijing.
'They said if Wang did not tell them where Li was, he and his parents would be prosecuted for helping a 'heavyweight prisoner' to escape,' Liu said.