New Zealand has recorded four new cases of COVID-19 as the country wakes up to its first day of a snap three-day lockdown.
Prime Minister Jacinda Ardern confirmed the country would move to alert level four yesterday, with only essential contact between people allowed, after just one case.
Ms Ardern said the country needed to "go hard and go early" to defeat the Delta variant, after one case was detected.
New Zealand's Ministry of Health confirmed this morning one of the four new cases is a workmate of the case announced yesterday.
The other three are contacts of this workmate.
The Ministry said it received the results last night of the genome sequencing for case A.
"It is the Delta variant," they said.
"We are undertaking further analysis to see how it could be connected to cases we know about.
"These developments strongly reinforce the importance of the actions taken last night in the move to level four and underpin the importance of everyone keeping to the lockdown conditions.
"The key message from the last lockdown remains relevant: 'stay at home, save lives, be tested. This will stop any undetected spread in the community."
Breakdown of new cases
One of the three contacts is a fully vaccinated health professional who works at Auckland City Hospital and had been working in recent days.
"Auckland City Hospital has taken some immediate actions to shut down any potential spread," the Ministry of Health said in a statement.
"Those actions include stopping unnecessary movements between wards, testing all staff and patients on the ward the health professional worked on and standing down, testing and isolating staff on the same ward."
Additional details and any further cases will be announced at 1pm local time (11am AEST).