Police have located the woman who travelled around Northland with a woman who tested positive for Covid-19.
Police said in a statement the woman was located at a west Auckland address this evening.
The woman has been taken into custody under section 70 of the Health Act and will be transported to an MIQ facility, police said.
Police said they will continue to investigate and "will be following up with this individual".
The woman travelled with another woman around Northland. The woman she travelled with tested positive for Covid-19 but has not been cooperative with officials and contact tracers.
Due to this, Northland was moved to alert level 3 on Friday and will stay in level 3 until 11.59pm on Thursday, Prime Minister Jacinda Ardern announced today.
Speaking at the press conference today, Ardern said the "easiest" thing for the person in Northland who travelled with the woman, was for her to come forward and get tested.
Ardern said officials were using every tools and means they had to locate the person, and she had asked health authorities and police to consider naming her.
Genomic sequencing of the positive case she travelled with has confirmed they are linked to the Auckland outbreak. She remains in an Auckland quarantine facility, while 21 close contacts have been linked to her.
Because the woman has been uncooperative, health officials do not have clear information on where she travelled to, so they are relying on high testing rates in the region to give the confidence needed that there aren't undetected cases, Ardern said.
Director-General of Health Dr Ashley Bloomfield said testing rates in the region needed to increase. He urged anyone who was in contact with the positive case and her companion to get tested, whether they are symptomatic or not. He also urged anyone else in the region who is symptomatic or has visited a location of interest to get tested.