According to reports, a British journalist disappeared in the Amazon after being threatened by his guide.
Dom Phillips, a contributor in Brazil went missing with a local specialist.
They were last seen together in the Javari region, Amazonas state, near the border with Peru.
According to The Guardian the reporter was traveling with Bruno Araujo Pereira, a former official of Brazil’s government whose job it was to protect Brazil’s uncontacted tribes.
According to the newspaper, Pereira had been threatened by miners and loggers in the area.
Local Indigenous leaders raised the alarm Monday after the pair disappeared during a mission to investigate the network of rivers surrounding Atalaia Do Norte, which is the entry point to the Javari reserve.
Univaja, an Indigenous group, said that the men set out last week by boat to reach a region called the Lago do Jaburu.
According to reports, they arrived Friday and began their return journey to Atalaia Do Norte on Sunday.
The river trip shouldn’t have taken more than an hour – and a search party arrived at 2pm to find them.
The search is believed to have been conducted by local police and the military.
Guardian News & Media spokesperson said that they are very concerned about Phillips’ condition and sought urgent information.
“We are in touch with the British Embassy in Brazil, as well as local and national authorities, to get the facts straightened out as quickly as possible.”
Phillips has been reporting on Brazil for over 15 years for newspapers such as The Guardian, The Washington Post and The Financial Times.