At least 64 people have died in an ambush in Papua New Guinea's remote Highlands region, reports BBC.
The victims were shot dead during a tribal dispute in the Enga province over the weekend.
The Highlands area has long struggled with violence, but these killings are believed to be the worst in years.
An influx of illegal firearms have made clashes more deadly and fuelled a cycle of violence.
Police started collecting bodies at the scene near the town of Wabag - roughly 600km northwest of the capital Port Moresby.
"This is by far the largest [killing] I've seen in Enga, maybe in all of Highlands as well," Royal Papua New Guinea Constabulary Acting Supt George Kakas said, according to the Australian Broadcasting Corporation (ABC).
"We're all devastated, we're all mentally stressed out. It's really hard to comprehend."
Police received graphic videos and photos purporting to be from the scene, showing bodies loaded onto a truck, say media outlets.
Escalating tribal conflict - often over the distribution of land and wealth - led to a three-month lockdown in Enga last July, during which police imposed a curfew and travel restrictions.
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