As Northland moved into snap level 3 status overnight, public health experts warned against any move to further loosen restrictions in Auckland next week, for fear of cases spiralling "out of control".
Northland's level change came after it was confirmed a woman used false information to obtain travel documents and spent several days in the region. She is now in MIQ in Auckland, but a female travelling companion has yet to be located.
The woman has not been cooperative and despite spending five days in the region - from last Saturday to Wednesday this week - only two locations of interest have so far been released. They are both petrol stations in Whāngārei - Z Kensington and BP Connect Wylies Woodhill.
The woman is believed to have travelled around the region, including Whangārei, Kamo, Paihia and Kawakawa, before returning to Auckland.
Cabinet will meet on Monday to discuss any potential changes in Covid-19 levels.
Ministers early last evening held an emergency meeting where they placed Northland into level 3 until midnight Tuesday. That decision, plus whether Auckland restrictions could be loosened, will be debated on Monday.But Covid-19 modeller Michael Plank - speaking after 44 new cases were confirmed, including 41 in Auckland and three in the Waikato - warned against any thought of easing up on Auckland.
"It does already look like cases are trending upwards, so I think relaxing further at this stage would be a real risk that you'd see cases spiral out of control."
He believes Waikato, however, could potentially move to level 2.5 if case numbers remain low over the weekend, and the finer case details point to the outbreak being well contained.
Parts of Waikato are in alert level 3 until Monday night while Auckland is currently at step 1 of easing level 3.
Covid-19 Response Minister Chris Hipkins revealed at 6.30pm yesterday that Northland would be moving into level 3 from 11.59pm.
It follows the case of the woman using a document which might have been based on false information. She had travelled widely through Northland.
By the time the document was rescinded, the person had already crossed the Auckland/Northland region border.
Hipkins said the woman had not been cooperating with contact tracers.
He said it was "very disappointing".
Hipkins said it had been difficult to locate the woman following a first weak positive test result, and it took police involvement to find the person again.
He said there was no information at this stage to say whether the case was involved with a gang, or connected to a gang.
A reporter at a hastily arranged press conference on Friday evening said they had been told the woman is a sex worker but Hipkins said he could not confirm that - he had not been briefed that was the case.
The document had permitted the travel under the "social services category".
Hipkins said he did not know why she was being uncooperative or how many contacts might be connected to the case.
The second woman has now been identified but remains at large.
This morning Far North District Mayor John Carter said the community was feeling hugely disappointed, frustrated and angry.
Northlanders have been working hard to keep the virus at bay and then an irresponsible person brought it into the community.
"It's frustrating as hell," he said.
Carter said the irresponsible behaviour put many whanau at risk, even those who are vaccinated.
"We've worked hard and now some bloody idiot has come and buggered it up for all of us," he said.
Former deputy PM Winston Peters said the situation in the north was predictable given the nature of the essential travel exemptions given out.
Peters told Newshub Nation said health authorities and the PM knew days ago who the person travelled with days ago.
Peters said the woman was travelling with Mongrel Mob member Harry Tam and that he brought her up from the Bay of Plenty to Northland via Auckland under false pretences.
She visited Whangarei and then fled to a marae further north, Peters said.
When police went to arrest her at the marae, she had already left, he said.
Peters said he was absolutely certain of his sources.
He said health teams knew this days ago and he thought it was shocking that they are not sharing the information with the public.
The public had a right to know, he said.
Peters also criticised the slow Maori vaccination rates along with the overall slow vaccine rollout.
Peters said the rollout of saliva testing had not just been slow, but inexplicably slow.
The current Auckland lockdown was avoidable and is putting thousands of businesses at risk, he said.
He said what he have here with the government is double talk, u-turns and spin.
Earlier Whāngārei mayor Sheryl Mai said another change in alert level was "unacceptable" and that it would hurt businesses and holidaymakers that had flown from other parts of New Zealand during the school holidays.
And Mai told RNZ she was "actually quite grumpy".
"We've got a person who really has done everything that they should not do. And they've impacted all of Northland as a result.
"I was giving the person the benefit of the doubt earlier today. Now I'm just ropeable."
Hipkins said the fact vaccination rates in Northland were low was also a factor in the decision to raise the alert level.
About 70 per cent of Northland's eligible population have had one dose, while 48 per cent have had two doses. Those rates are lower for Maori: 52 per cent for one dose and 32 per cent fully vaccinated.
"Widespread testing and wastewater testing will take place over the weekend," Hipkins said.
"Every Northlander needs to stay home, get tested as soon as possible if they have symptoms, and continue to check the Ministry of Health website for updated locations of interest. And of course, vaccination centres continue to be open in alert level 3.
"We know many people in Northland live rurally, but the advice is the same for everyone – get vaccinated, get tested, and follow the alert level 3 requirements.
"As we have seen in Waikato the virus is finding its way into rural areas and finding unvaccinated people. Distance is no barrier. It's never been more urgent to get vaccinated and we urge everyone to act now."
Plans to erect a checkpoint north of Whangārei are being discussed following the revelation a Covid-positive women travelled throughout the region recently.
Late yesterday, Tai Tokerau Border Control spokesman Hone Harawira confirmed the group had been working with Northland police to stand up a checkpoint at Waiomio - about 30 minutes north of Whangārei before Kawakawa, known as the entrance to the Far North.
Group convener Nyze Manuel said motorists will be asked to turn around, should the checkpoint be instated.
"Now that the decision has been made that Northland will go back to [alert] level 3, we will be asking people not to travel north from Whangārei until we get the all clear from authorities, and we're also talking to police about running mobile patrols to counter people trying to slip the border through the back roads."
