Madrid , Spain ( CNN ) -- Spanish police said Tuesday they have arrested five more people in connection with a male prostitution ring involving trafficked men . The five were arrested for crimes related to prostitution and the rights of employees , the Spanish National Police said in a statement . The arrests took place at three male brothels in central Madrid , police said . Last week , police announced the arrest of 14 people as part of the investigation into an organization dedicated to the sexual exploitation of men , the first bust of its kind in Spain . The men had all been trafficked from Brazil . One of those trafficked was a 16-year-old Brazilian boy who was found to have performed sexual services for the organization for almost three weeks , Spanish police said Tuesday . His pictures were on a website for the brothel where he was working , they said . Police said the ringleaders picked up 60 to 80 men in Brazil and gave them each a travel bag and an airline ticket . The men were lied to about the work they would be doing and the money they would be making , police said . Initially they were told they would have to pay back only the cost of the airline ticket , but instead they were asked for amounts exceeding 4,000 euros ( $ 5,066 ) , police said . The leader of the ring , based in Palma , sent the men to various brothels , gave them cocaine , poppers -- alkyl nitrites that produce a rush when inhaled -- and Viagra , and put them to work as male prostitutes , police said . The network advertised in newspapers and on websites that displayed the men 's photographs , police said . The websites offered different sexual services in both the brothel or at private homes and hotels , police said Tuesday . Investigators have also found that the trafficked men remained at each brothel for about 21 days and were available to clients 24 hours a day . In each house was an average of eight to 10 men , the vast majority of Brazilian origin , police said . The men were forced to give up half of their earnings in addition to daily expenses of up to 200 euros ( about $ 250 ) , police said . If the men complained , the network resorted to threats , including the threat of death , police said . The leader of the organization , known as `` Lucas , '' was arrested in the first phase of the operation . He was responsible for knowing the situation of each man and obtained their payments through bank transfers , police said Tuesday . The investigation , initiated by the Immigration Networks and Falsified Documents Unit of the National Police of Granada , included similar units in the Balearic Islands , Barcelona , Alicante and Leon as well as Brazil 's Interior Ministry . CNN 's Laura Perez Maestro in London , England , contributed to this report .
Interior Ministry announced last week . The arrests took place in central Spain . five people were arrested as part of the investigation the arrests Tuesday .