The Ministry of Health (MoH) has announced 33 new community cases of Covid-19 today. 

The rise in number of community cases comes as the Government decides on New Zealand's alert levels later this afternoon.

Only one of today's 33 cases is still to be epidemiologically linked and all are in Auckland.

There are 21 people with Covid in hospital and four in ICU. As of 10am today, there are 126 locations of interest.

Seven of yesterday's 20 cases had exposure events. The other 13 were in isolation throughout the period they were infectious.

Some 8,657 Covid tests have been carried out in the last 24 hours - and almost half of those have been in Auckland.

Prime Minister Jacinda Ardern and director general of health Ashley Bloomfield will front a press conference at 4pm to announce Cabinet's alert level decision.

Auckland has already been in lockdown for two weeks more than the rest of the country and as the number of new people with Covid bounced back up over the weekend, experts are now warning the city may be facing longer in level 4.

There were 23 cases on Saturday.

Of the 20 cases yesterday, eight were still yet to be epidemiologically linked.