Few isolated indigenous tribes residing in the Amazon region in Brazil bordering Peru have endured violent attacks and are more prone to contracting diseases like flu, the government stated.

These tribes hardly made any contact with the wider society and they survive by hunting and gathering.

There are said to be four such remote tribes in the Amazon region bordering Brazil and two of them inhabiting the region on the Peru side.

77 such isolated groups are expected to be living in the Brazil's Amazon region.

According to the Brazil's National Indian Foundation (FUNAI), a team of seven people who fluently communicate in the language expected to be of the Pano linguistic group made contact with a native tribe in Western Brazil, which informed the Brazilian government.

The Brazilian government in order to find out what had happened sent out a team of interpreters.

FUNAI in a statement this week said that members of the settlement had contracted the flu and were given medication at a government outpost in the Amazon before bore they came back to their native place.

Fiona Watson, research director at Survival International, an indigenous rights organization said in a statement, "They said, or were able to show, that they had been shot at with firearms. Are there others that are being killed? That's quite likely. These peoples have bow and arrows to defend themselves against heavily armed peoples."

In the regions of Peru and Brazil occupied by such isolated settlements, their rights are time and again violated by farmers or other property-owners who acquire the groups' land or expel them.