Pimps rented three luxury flats in a penthouse in Barra da Tijuca, turning it into a 24-hour brothel as they ran a child prostitution network.
Many of the expensive flats in the Villas da Barra complex are being rented out to international tourists with families and young children for thousands of pounds.
The debauched gang planned to pimp out girls to Olympic visitors and athletes.
The Olympic Park is just minutes away from the flats and is clearly visible in the recorded police images from the penthouse balcony.
Rental prices in these three-bedroom properties range from £1,500 to £5,000 per month. Flats have swimming pools and luxury fittings.
The gang's innocent victims were lured to the posh pads by professionally designed adverts posted on social network which promised a high-class life style living as a top model.
The girls ages ranged from 14 to 21.
Chief Inspector Cristiana Bento from the Rio de Janeiro Child and Adolescent Victims Police Division, said: "The youngsters were duped into prostitution by adverts put on Facebook.
"The girls were promised a life of a princess, living a lavish lifestyle in a classy neighbourhood.
"But instead they were trapped by these unscrupulous criminals and sexually exploited."
Jonathan Alves Mendes – one of the pimp gang leaders .
"They had already set up and negotiated many appointments for the girls.
She said: "The criminals knew property prices would be more expensive during this period so they rented well before [the Olympics].
"Their intention was to take advantage of the increase in demand for sex because of the Olympics and they enticed vulnerable teens aged 15 to 16 years and some older girls with Facebook ads."
Marcio Garcia de Andrade – one of the gang members – on a luxury holiday in Miami, Florida.
Also for the first time, 100,000 female condoms will be handed out.
The fraudsters claimed they could help would-be actresses, singers and models with a 'burning desire' to become famous.
The advert promised applicants would receive 'expensive clothes, access to a private gym, private medical health care, personal chauffeurs and maids to look after their every need.'
The authors guaranteed that the most beautiful and talented girls would get a scholarship which would lead to a profitable future.
Bento said: "Girls were encouraged to send in their photos, to describe their dreams and even the difficulties they faced in trying to make a successful career as a model, singer or actress."
But it was all a sleazy con and a filthy lie.
was not paying off the police and/or politicians.
There are probably many similar brothel operations that are paying bribes and thus are overlooked by the authorities.