36 foreign women, were nabbed at an entertainment outlet in Jalan Klang Lama during a police raid early this morning.
The women, believed to GROs, were from China, Indonesia, Vietnam and Thailand.
Further investigation also revealed the premises was also operating on-line gambling.
Out of the 70 people screened, 18 were detained for various offences including 15, who tested positive for drugs.
31 computers and cash were also seized.
All those detained have been taken to the Brickfields District Police headquarters for further investigation.