The H'Mong people who caused disorder in north-western Vietnam recently were lured by a cult that says the world will end this Saturday, the Agence France Presse quoted a pastor with links to the ethnic minority group as saying.
Doan Trung Tin, who leads the Vietnam Good News Mission Church, told AFP on Thursday that about 60 families from his church went to the remote north-west for a gathering of Hmong awaiting the return of Jesus Christ.
He said some of his impoverished parishioners - about 300 people - sold their belongings to pay for the bus journey from their homes in the Central Highlands provinces of Dak Lak and Dak Nong to the gathering in Dien Bien more than 1,000km away.
They were lured in part by a translated document that spoke about the prophesies of Harold Camping, Pastor Tin said.
"Many of them, they received this" document, he said.
Camping operates an American-based Christian radio network that broadcasts in many languages, including Vietnamese, and claims the world will end on Saturday.
According to Vietnamese officials, the H'Mong people had gathered in Muong Nhe District's Huoi Khon village to see the appearance of the "supernatural force," said to show up to bring them to a promised land where they would be blessed with happiness, good health and wealth.
Some instigators then set up a self-governing area with security guards, hindering locals' activities and transport while making illegal demands.
The public disturbance was resolved peacefully, officials said.