Testing shows two new cases have been detected in MIQ, and none in the community, officials say.
In a statement from the Ministry of Health, it said there were also two new historical cases aboard the Playa Zahara ship.
The new new imported cases came from the United States and the United Kingdom.
It said the number of active cases in New Zealand is 58 and the total number of confirmed cases is 2506.
"One previously reported positive case has now been reviewed and classified as 'not a case' and a second previously reported positive case is now reclassified as under investigation. Both cases have been removed from our total tally of cases."
Yesterday three new positive cases of Covid-19 were announced in managed isolation facilities.
People in Taranaki urged to get tested
Anyone with cold or flu symptoms in Taranaki, or anyone who has visited Taranaki after arriving from Australia has been called on to get tested for Covid-19, but few are lining up.
Authorities earlier detailed two positive results for the virus that showed up in wastewater testing for the area, and extended testing to try to catch the source.
However, the Taranaki DHB said number of people who lined up at testing sites yesterday was abysmal, with only 80 people from Hawera to New Plymouth getting tested.
The Health Ministry said more results from wastewater testing in the region will be released tomorrow.
Protests in New South Wales, Paris, Greece and Brazil
A special police taskforce in New South Wales is examining security camera and smartphone footage, trying to identify about 3500 people who joined a march yesterday against the Covid-19 lockdown.
Three and a half thousand people turned out in central Sydney.
The state's police minister said he had no doubt at least one of those people was carrying the virus, and has urged attendees to get tested.
Greater Sydney has been in lockdown for four weeks, but New South Wales reported a record 163 new infections yesterday.
Thousands also joined anti-restriction protests in Melbourne, protesters decrying the restrictions and vaccination regulations clashed with police in Paris, and in Greece police used teargas to break up crowds of protesters.
While in Brazil protesters rallied for the impeachment of their president Jair Bolsonaro, amid corruptions scandals and widespread criticism that he dismissed the severity of the disease and opposed masks and social distancing measures.
- If you have symptoms of the coronavirus, call the NZ Covid-19 Healthline on 0800 358 5453 (+64 9 358 5453 for international SIMs) or call your GP - don't show up at a medical centre