An MIQ worker at the Holiday Inn facility in Auckland has tested positive for Covid-19 during routine testing.
File image. Photo: RNZ / Dom Thomas
The case was discovered on Monday and an investigation is underway to find the source of the infection.
The Ministry of Health says there is no evidence that transmission happened within the facility.
It says the worker is fully vaccinated and has been regularly tested.
They are now isolating in a quarantine facility.
Meanwhile, there are 13 new Covid-19 locations of interest so far today - all in South Auckland.
They include Pak'nSave in Clendon Park, Countdown in Manurewa, the Clyde Road Superette in Otara, a laundry and other supermarkets.
There is also concern about a mystery case.
Officials have not been able to find a link with a woman who went to the emergency department at Middlemore Hospital on Wednesday for an issue unrelated to Covid-19 and later tested positive.
Director General of Health Dr Ashley Bloomfield yesterday said the Middlemore Hospital case - and another at the hospital - were being investigated very thoroughly, along with a few other unlinked cases.
Vaccination centres have been scaled up again in Auckland today, amid second-dose bookings from the country's first mass vaccination event.
On Monday, the government will decide whether Auckland and the rest of the country, will move down alert levels.
Eleven new Covid-19 cases were announced yesterday and the Ministry of Health is due to release the latest figures about 1pm today.