Brazil deploys army, navy in search for British journalist

STORY: The authorities have dispatched search teams in boats and helicopters to the area, along with federal and state police support.

Meanwhile, Brazilian police have opened a criminal probe and interviewed at least four witnesses believed to be among the last to have seen freelancer Phillips and his companion Pereira, a former senior official with the federal indigenous agency Funai.

Pereira and Phillips, who has written for the Guardian, the Washington Post, and others, went missing on Sunday during a reporting trip in the Javari Valley.

The vast region, which borders Peru and is home to the world's largest number of uncontacted indigenous people, is threatened by illegal miners, loggers, hunters, and coca-growing gangs who make the raw material for cocaine.

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