Police are working with the Ministry of Health to find out whether there has been a breach of Covid-19 restrictions at a Far North address where community cases are self-isolating.
A spokeswoman confirmed police received a report about "activity" at the address in the Northland district, which is in alert level 2.
"We are working with the Ministry of Health to understand the circumstances and determine whether any breaches have occurred."
People with Covid-19 held a gathering at the address, according to a Stuff report that quoted University of Otago Professor Michael Baker saying it would be "very worrying" if people had visited a Covid-19 home isolation address.
There are currently 12 confirmed Covid-19 cases in Northland and all the cases are isolating at home, according to the Health Ministry's 1pm update on Sunday.