Acting on a tip-off, a team of officials raided a spa in Virar area of the district and arrested the 43-year-old Thai woman yesterday, Assistant Police Inspector S A Ingole said.
Two women, one of them from Thailand, were rescued during the raid, he said.
The accused woman was operating the flesh trade racket from the spa for the last one year, the police said.
The police sent a decoy to the spa and trapped the accused, they added.
The rescued women, aged 23 and 25, were sent to a shelter home in Boisar, the police said.
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