The detentions were made by Poland's Central Bureau of Police Investigation (CBŚP) in the central Mazowieckie region of which Warsaw is part and in Małopolskie province in the south, officers said on Tuesday.
Investigators allege the group was headed by a woman identified as Swietłana P., while other members were responsible for transporting women to clients and providing security.
(gs)
Source: IAR, PAP, cbsp.policja.pl