Anti-lockdown activists and Covid-19 deniers have gathered in Auckland's central business district to protest the snap lockdown - with its organiser being arrested 43 minutes into the event.
And the nation's top police officer says his staff will not hesitate to deal with others flouting lockdown regulations and having unlawful gatherings.
Controversial musician and politcal hopeful Billy Te Kahika was leading the gathering, which has attracted about 50 people outside TVNZ's HQ on the corner of Victoria and Hobson streets.
Speaking after his arrest during her 1pm Covid-19 update, Prime Minister Jacinda Ardern was quizzed about the event, responding: "I don't want to let the action of small numbers actually characterise everyone, because that's just not the case.
"It is disappointing that some choose to put others at risk".
Police Commissioner Andrew Coster confirmed four people had been arrested at the gathering.
Other protests were hosted outside police stations in Nelson in Tauranga. Four people had been arrested in Tauranga, after being part of an earlier 20-strong protest group.
Coster said officers wouldn't hesitate to lock-up others at any similar protests who refused to disperse.
People who gathered in that way in Auckland today put everyone at risk.
"They can expect enforcement action," he said. "We will deal with them."
The Auckland protest started at noon, with police first issuing a warning to him, before arresting him about 12.43pm.
As he was being taken away Te Kahika said he hoped the event wouldn't turn violent.
Before his livestream of the event cut out, Te Kahika also urged police to take him away as soon as possible to reduce the chance of his assorted supporters causing trouble.
He also told those around him that the police officers attending the protest were good people simply doing their job.
The gathering had heard speeches from Te Kahika and some of his supporters.
One woman described the snap lockdown - initially seven days in Auckland and the Coromandel and three days elsewhere - as a disturbing action.
She also labelled Prime Minister Jacinda Ardern as a "rat" and urged shop keepers and businesses to keep their doors open; something which businesses deemed non-essential are not allowed legally to do.
Another speaker talked about how the Covid-19 pandemic was actually a "scamdemic".
Te Kahika has been streaming live from the scene, and at one stage was called out by a member of the public for some of the messages he and his supporters have been sharing.
Police confirmed in a press release shortly after 3pm that decisions had yet to be made over what, if any, charges those arrested in Auckland and Tauranga would face.
A protest was also held outside the Nelson police station, but police said the gathering of about 20 people moved on after receiving verbal warnings.
"We urge everyone to stay at home and we will continue to work with our partners and the public to ensure everyone complies with the restrictions in place under Alert Level 4," police said.
"The vast majority of New Zealanders are doing the right thing and abiding by the Alert Level restrictions, and these protestors represent a very small number of people who are not."
Prior to the Auckland protest beginning, controversial Destiny Church leader Hannah Tamaki also went public again with her thoughts on the Covid-19 vaccine roll-out.
She is vehemently against it, posting on social media: "not vaccinated, I don't hv Covid, I stand by my choice, not 2 be. I'm not afraid to trust my immune system & mostly my God".
Tamaki's post received a backlash from some responders.
One likened her to a "reckless idiot", another wrote: "You know there are loads American evangelical churches that did the same and still died right. Act responsibly, if not, keep that dross to yourself .Be part of the solution, not the problem."