Watch: Amazon tribe makes first contact with the world
The group lives in a jungle near the border of Peru in the Amazonian state of Acre
Brazil: A Brazilian government agency released video of an indigenous tribe that researchers say lives in complete isolation in the thick of the Amazon jungle after they first made contact with the group in June.
The group lives in a jungle area near the border of Peru in the Amazonian state of Acre in northwestern Brazil.
Brazil's National Indigenous Foundation (Funai) said it has been monitoring the group since 2008, but direct contact was not made until June.
Members of the group can be seen making animated gestures as the researchers approached them on the shores of an Amazonian river.
Some of the tribesmen were armed with bows and other weapons, but the initial contact appeared peaceful.
Researchers from Funai, the Front for Ethno-Environmental Protection and members of neighbouring tribes say they are working to contain the group and protect their integrity and environment.
The work they are carrying out in the region aims to study indigenous tribes in order to assess threats to their livelihood while also protecting the environment they live in and their right to self determination.
Researchers say the tribe is a subgroup of the Pano linguistic group.