Witchcraft allegations are forcing so many women to flee their villages in Papua New Guinea that one local government worker says it is creating a refugee problem.

Recently there were reports about four women and 13 children in danger after being identified as witches in the Hewa language area of Enga province.

At the time, a Lutheran missionary in PNG's Highlands, Anton Lutz, said he knew of at least 25 women killed over the past 10 years after being accused of sorcery in the region, with no arrests being made.

The women were in a region so remote it would take a flight and a three-day hike to reach.

Ruth Kissam, a youth coordinator for the Western Highlands provincial government, said some groups were trying to send help.

"I believe the churches are coming together on this, trying to send teams in, but the [police] response to me was they do not have funding to be able to go in," she said.

Ms Kissam told Radio Australia's Pacific Beat the police and government had to step in to deal with what she insisted was a national crisis.

"This place is very isolated and there is no police presence in the area - they have a council, but the council are also local people from the area who believe in witches and all that, so basically you wouldn't have any people on the ground that would be impartial."

She said local authorities needed support from the national government.

"They aren't able to do anything right now. Unless they are able to get something, try to get the commissioner and the people higher up to respond to this as a matter of national urgency."

Ms Kissam said the belief in sorcery and witchcraft was spreading and destroying communities and that many people were fleeing their villages, something "totally unheard of" in their culture.

"There are lots of people right now within the Hewa-speaking region, [fleeing their villages] ... simply because of accusations and they know they will be killed.

"So in a way, you have sanguma [sorcery] refugees."

Ms Kissam said the belief in witches and sorcery was spreading across the country.

"The worst thing is new beliefs are popping up - in places like Enga province, which is now quite a hotspot.

"The [belief in witches] had never been there before, but now they're becoming some of the worst perpetrators right across the country," she said, adding that they were responsible for killing Kepari Leniata in February 2013.

"Most of the targeted women are people with no male relatives to stand up for them or people living on fringes of society."