At least 16 foreigners continue to be held over alleged unpaid debts and compensation despite completing jail terms.
Chris Humphrey is based in Hanoi as the Vietnam Bureau Chief for Deutsche Presse-Agentur. As a freelance journalist, he also writes for Al Jazeera and... other publications, covering the environment, human rights, culture and geopolitics.
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Within shoreline communities, tales of cetacean altruism are at the heart of a centuries-old tradition of whale worship.
Some 15 indigenous people from marginalised Batek group have died in the past six weeks with scores more in hospital.