New Zealand Prime Minister Jacinda Ardern has said she will again discuss the stand-off on Manus Island with Malcolm Turnbull when the two leaders meet at the East Asia Summit in the Philippines this week.

Key points: Ms Ardern said she believes New Zealand has a role to play in resolving the issue

Ms Ardern said she believes New Zealand has a role to play in resolving the issue Around 420 refugees refusing to leave the Manus Island centre may be forcibly removed

Around 420 refugees refusing to leave the Manus Island centre may be forcibly removed Ms Ardern said "it's clear that we don't think what happening there is acceptable"

The approximately 420 asylum seekers and refugees choosing to remain at the now-closed Manus Island processing centre have been without food, water or medical supplies for almost two weeks.

They are refusing to move to new accommodation being provided for them elsewhere on the island as they say they will not be safe there.

Asked about reports that Papua New Guinean authorities will soon remove the men from the centre, Ms Ardern said she would once again raise her country's offer to take refugees from Manus Island with Mr Turnbull.

"I have pursued this issue from New Zealand's perspective," she told a media conference at the APEC Summit in Vietnam.

"We see that we have a role to play here, we're very eager to play that role and as I say I'll be having another conversation with the Prime Minister in the Philippines."

The two leaders discussed New Zealand's longstanding offer to resettle 150 men from Australia's detention centres in Papua New Guinea and Nauru little more than a week ago.

Mr Turnbull opted not to take up the offer, but did not rule out accepting the deal at a later stage.

Ms Ardern said the unfolding standoff on Manus Island between refugees and Papua New Guinea's immigration officials was not acceptable.

"I see the human face of this issue. I see the need and the role New Zealand needs to play," she said.

"I think it's clear that we don't think what's happening there is acceptable, that's why the offer is there.

PNG minister expects men to leave

Papua New Guinea's Minister for Immigration and Border Security Petrus Thomas said on Sunday he expected the remaining men at the Manus Island detention centre to leave the site by Monday so they can access, "food, water, medical care and security".

Sorry, this video has expired Manus Island asylum seekers protest

It is understood about 120 asylum seekers have left the facility since it was closed on October 31.

However, about 420 men still remain inside the facility 12 days after it was officially shut down.

In a statement released on Sunday Mr Thomas said authorities would be "taking steps … to move the residents based on serious health risks".

Papua New Guinea authorities started to dismantle makeshift shelters at the centre over the weekend, while the men reportedly began digging more wells.

Nai Jit Lam, from the UN's refugee agency UNHCR said earlier this week the withdrawal of critical services had created a high-risk environment for all parties involved.

"There are no interpreters in Manus right now," he said.

"Whether it be with local people or police … there are concerns there's a high risk of miscommunication."

Workers began removing fences from the processing centre a few days ago. ( ABC News: Liam Fox )

Mr Lam said questions still remain over the quality of the new accommodation being offered to the men near the island's main town of Lorengau.

"From our observation so far, the services that have been withdrawn from the regional processing centre has not been adequately replaced outside of the centre itself — that's a serious concern for us," he said.

"There is an increased risk because of the way this has been organised."