Sexual services from college girls as young as 19 years old are reportedly made easily available for budget hotel customers in some districts in Malaysia.

The operators of the illegal flesh trade allegedly pimp the girls via online bookings for around 165 Malaysian Ringgit ($40) to 300 MYR ($74) per session, according to Asia One. After an investigation, the group was later revealed to be operated by just two brothers with police connections.

A special unit from the Malacca police exposed the criminal operation after going undercover and acting as “clients.” The investigators were able to connect to the pimps via the messaging app WeChat.

The successful police operation, which led to the rescue of three college students aged between 19 and 21 years old found at a local hotel, is part of an ongoing crackdown on illegal prostitution syndicates and gambling operations.

It was later discovered that the criminal group offers sexual services from Malaysian, Thai and Vietnamese college girls. Local girls are priced slightly higher at 250 MYR ($62) to 300 MYR ($74) while the foreign girls can fetch between 165 MYR ($40) and 200 MYR ($48). Meetups are set at budget hotels around the Malaysian state of Malacca.

State police chief Deputy Comm Datuk Ramli Din revealed in a press-conference that the two brothers, aged 24 and 26, who were suspected to run the flesh trade were apprehended.

“We have seized all the evidence, including condoms, at a hotel used as a base by the pimps involved,”Ramli was quoted as saying. “Based on a preliminary probe, the prostitution ring has been active here for a month.” 

In a separate police operation, two men aged 37 and 40 years old were also arrested for pimping three foreign women aged between 25 and 29 via social media.

Local crime prevention groups have alleged that college girls have been participating in the flesh trade for quite some time now. Experts believe that some teenagers indulge in such activities to pay for their lavish lifestyles.