Tensions over forest and mineral resources are brewing in Brazil's remote Amazon, and one tribe has decided to take matters into its own hands.
Reuters photographer Lunae Parracho accompanied a group of Indian warriors last month as they went in search of illegal gold miners in their territory in western Para state.
The Munduruku tribe has seen its land encroached on by wildcat miners in search of gold, and the tribe's leaders travelled to the capital Brasilia last year to demand the federal government remove non-indigenous miners from their territory.
Rather than wait for a court decision to start the process — which could take years — the Munduruku decided to take action themselves and expel the miners.
A group of 70 Munduruku dismantled a wildcat mine after sneaking up on boats when Reuters visited them in mid-January. Armed with bows and arrows, they outnumbered the miners and were able to take over without anyone being hurt — this time.
Editor's note: Images taken in January 2014 and made available to NBC News today.