Papua New Guinea killings: what’s behind the outbreak in tribal fighting?

Up to 150 killed in Enga Province as experts say weaker legal systems, weapons access and loss of hope' fuel deadly clashes

An outbreak of violence has killed up to 150 people in the Highlands of Papua New Guinea, local police said, in what one expert described as a bushfire that has got out of control" as more forces are sent to calm clashes in the region.

While tribal fighting is not unusual in parts of Papua New Guinea, the issue attracted international attention last week after disturbing footage appearing to show three naked men, tied-up and dragged behind a truck as onlookers cheered, circulated on social media.