Immigration officials have come under fire for repatriating an illegal immigrant who is pursuing legal action for wrongful detention. Yau Wing-mei, 32, who spent two months in jail before charges against her were dropped at a retrial in August, was sent back to the mainland yesterday. Ms Yau had served most of a three-month sentence imposed in Western Court on March 14 after she admitted misleading an immigration officer with false information and transferring a travel document to another person without reasonable excuse. But her husband, Kwok Kwong-ning, 42, said she could not have had a permit to transfer because she was smuggled into Hong Kong by boat last year. A retrial was ordered after an appeal in May, during which Ms Yau complained that immigration officers and a duty lawyer bullied her into confessing. The couple are re-applying for legal aid to sue the department for compensation after their first application was turned down in September. The woman was arrested when she tried to extend her stay at the immigration office in Central yesterday morning, according to Mr Kwok. 'The whole thing was so sudden that I was not prepared for it. Now no one is here to take care of our nine-month-old girl after my wife was sent back to the mainland,' he said. Democratic Party legislator Albert Ho Chun-yan, agreeing that repatriation in such cases was legal, said the department had given the impression officials would try to remove people who were seeking legal action against them. A department spokesman said last night: 'Ms Yau or her husband may still pursue her claim for damages even after her removal.'