Authorities in Peru announced they decided to protect the “uncontacted” tribes in the Amazonian rainforest against the several threats that the specialists warned about, such as illegal logging, oil exploration or diseases.

The existence of the indigenous tribes between people between Peru and Brazil was revealed in September 2007 by the National Institute of Natural Resources and a Frankfurt-based association. Soon afterwards, multiple international and local NGOs have fought to protect the Indians’ way of life, and last week’s news about the isolated Brazilian tribe’s members aiming their bows and arrows at a plane managed to draw some attention on the issue.

The pictures, released by the Brazilian government's National Indian Foundation, pictured alarmed members of the isolated tribe, with their skin painted red and black, trying to attack the aircraft that carried the photographers over their village.

A statement by Survival International, a tribal rights group, said the photos were taken "show they are there, to show they exist."

According to BBC News, authorities in Peru’s Amazon state Madre De Dios announced they would stop illegal loggers search the rainforests for tropical hardwoods. These loggers are usually the first ones to encounter the isolated tribes.

Marco Tulio Valverde, an adviser to the regional government, said the government hadn’t determined whether there were three separate tribes or a single one that had split into more groups.

"They only hunt, gather and fish, they don't farm, but they know fire," Valverde said, as quoted by the BBC.

Survival International praised the government’s initiative, but warned that measures needed to be taken fast.

"It must stop the logging, remove the loggers and any other invaders from the uncontacted Indians' land, and ensure that no-one else enters in the future," the group said in a statement.

Loggers are not the only ones to endanger the tribes, but also diseases, even the common ones such as a cold or flu, as the isolated people lack the antibodies to protect themselves from them.