Park Ju Dei, the Korean national, was arrested on Wednesday at Nemili near Sriperumbudur along with eight Indian women hailing from north-eastern states including Mizoram and Nagaland, police said.
Seven high ranking Korean business executives were also rounded up when authorities stormed the hotel but were let off with a warning, police said.
Sriperumpudur DSP Balasubramaniyam said Ju Dei had among his clientele many top ranking executives of various Korean firms.
Ju Dei had been running the racket for at least two years and along with him, five persons who were drivers and office boys were also rounded up during the raid, police said.
The building looked like a hotel-cum-bar at the ground floor, beyond which the public had never been allowed to proceed, police said, adding they had found a sophisticated mini-cinema hall in the building.
Balasubramaniyam said the arrested women were sent to welfare homes in Chennai, pending enquiry.
Ju Dei was booked under the Immoral Trafficking and Tamil Nadu Prohibition Act, he said.