( CNN ) -- A city official in the remote Brazilian Amazon village of Envira told CNN that five members of the Kulina tribe are on the run after being accused of murdering , butchering and eating a farmer in a ritual act of cannibalism . The village 's chief of staff , Maronilton da Silva Clementino , said Kulina tribesmen took the life of Ocelio Alves de Carvalho , 19 , last week on the outskirts of Envira , which is in the far western part of Brazil that bumps up against Peru . Portal Amazonia newspaper reported that the Indians escaped after being held for a few hours in the city 's police station . No arrest warrants were issued . Brazilian law does not allow the military or civil police to enter Indian lands , Portal Amazonia reported . It is still unknown how many people took part in the alleged cannibalistic ritual , although several Indians have fled into the jungle fearing prosecution , the newspaper Diario do Amazonas reported . Clementino said the victim was herding cattle when he met with a group of Indians who invited him back to their village . `` They knew each other and they sometimes helped one another . They invited him to their reservation three days ago and he was never seen again , '' Clementino said . `` The family decided to go into the reservation and that 's when they saw his body quartered and his skull hanging on a tree . It was very tragic for the family , '' he said . The news of the incident came from the Indians themselves , who apparently bragged about eating the man 's organs , Clementino said . Members of the tribe told residents of Envira -- where 190 Kulina families brush shoulders with non-tribal Brazilians -- that they held a cannibalistic ritual in which they cooked the victim 's organs , Clementino said . He said Kulina Indians began surrounding the police station where the suspects were briefly interrogated . Villagers told authorities they are incensed by the lack of response from FUNAI , Brazil 's National Indian Foundation . `` The family is very frustrated with the law here , which protects the Indians and does n't help protect us , '' he said . `` They start drinking and local farmers here are afraid who could be next . '' Clementino said groups Indians -- often outnumbering police -- pose a security threat to locals . He said the man 's family are upset that authorities did not arrive until three days later . But a FUNAI official told the newspaper Voz do Acre that access to Envira is very difficult , requiring long boat or helicopter rides . According to FUNAI , about 2,500 Kulina live in Brazil 's Acre state , which borders with Peru , where 450 Kulina live . This remote jungle corridor is known for its isolated tribes . The Kulina are classified as an `` isolated '' tribe but some have contact with the non-indian population . The Kulina are also known for their complex language . FUNAI studies show that Kulina women speak a completely different language from the men . According to FUNAI , there are 460,000 Indians in Brazil and 1,300 indian languages . There are 55 groups considered to live in isolation .
Five members of the Kulina tribe on the run after being accused of murder . They are accused of murdering , butchering and eating a buffalo in a ritual slaughter . Victim was herding cattle when he met Indians who invited him back to their village . Suspected suspect escaped after being held for a few hours at a police station .