The two newest cases are children under 12 and are family members of the first cases.
The new location of interest is Foodmart in Omapere, which was visited by a positive case from 3.30-3.45pm on Thursday, October 21.
On Friday, Countdown Kaikohe, Mobil Kaikohe and GAS Kaihu were named as locations of interest connected to the cases.
The full list of locations of interest, which continues to be updated, can be found on the Ministry of Health's website.
Earlier on Saturday, the Ministry of Health named Four Square Opononi, The Warehouse Kaitāia, Boatshed Café Rawene and Hunting and Fishing New Zealand Kaitāia as locations.
The visits occurred between Wednesday and Friday this week.
New locations were also announced in Auckland, Hamilton and Te Awamutu.
The health advice for all of the locations is to monitor for Covid-19 symptoms for 14 days from exposure and to get a test if any develop.