A Taiwanese visitor claims she and her two young children were held at Chek Lap Kok airport for 20 hours and refused entry after she was apparently mistaken for a Falun Gong member. Lai Shu-lin, 34, claims she was under close surveillance and was not allowed to even close the toilet door during her detention, according to her husband, Mr Choy, who is from Hong Kong. In a telephone interview from Kaohsiung, Taiwan, Mr Choy, who would not give his full name, told the South China Morning Post that his wife took their son, aged five, and daughter, seven, to Hong Kong on June 30 to visit relatives. But on arrival at about 7pm the family was taken to a separate room by immigration officers. Mr Choy claimed immigration officers refused to explain to his wife why she was denied entry and detained, but asked the family to take a 10am flight back to Taiwan the next day. Mrs Lau was told by another person detained in the same room that she had probably been mistaken for a Falun Gong member who shared the same name. The family was finally sent back on an afternoon flight at 3pm. Mr Choy, who moved to Taiwan 10 years ago, accused the Hong Kong government of failing to carry out a thorough investigation before deporting innocent people. 'How can someone be refused entry or detained only because they share the same name of the people blacklisted by the government? That is ridiculous,' he said. Officials have always insisted there is no blacklist of Falun Gong members. Mr Choy said he would not allow his family to visit Hong Kong in future unless immigration officials cleared his wife's name from the list. The Immigration Department yesterday said it refused to comment on individual cases, but insisted nobody had been refused entry on religious grounds. The number of people denied entry at Chek Lap Kok last year rose by almost 28 per cent on the previous year, despite a drop in travellers flying into the SAR. Among those refused entry were 13 overseas Falun Gong members who wanted to join the group's SAR conference in January. More than 100 sect members were turned away in May during a visit by President Jiang Zemin.