The women were rescued after investigators raided two pubs in southern Taiwan yesterday and arrested the suspected ring leader, a man identified only by his family name Hung, the Tainan district prosecutors' office said.
Hung was accused of recruiting the women under the pretext that they would be working as professional dancers. Instead, he took away their passports after they arrived in Taiwan and forced them to work as sex slaves, it said.
Hung was later released on a bail of USD 33,300 while the women will be sent to a local shelter, prosecutors said.
While there is no official figure for the scale of Taiwan's sex industry, observers estimate it involves hundreds of thousands of people and generates billions of Taiwanese dollars a year.