Brazil searches for isolated tribe

The Brazilian indian agency FUNAI has launched an expedition to search for isolated tribes living in the Amazon jungle and map their territory.

The team is to travel along several rivers in the Javari valley, near the border with Colombia and Peru, where monitoring planes have detected indigenous communities in recent years.

They will try to indentify roads and huts to demarcate their land and find out if there is any threat of invaders.

An official of the agency said the expedition would try to avoid direct contact with any of the isolated groups.

From the newsroom of the BBC World Service