Health officials are investigating a possible source of infection in Nelson as a new case of Covid-19 is not linked to any existing cases.
A new case has been reported today, bringing the total number in the Nelson community to four.
Covid-19 Minister Chris Hipkins said the Public Health Unit is investigating a possible source of infection.
Eight new locations of interest in the city have this morning been added to the MoH website. All four cases are isolating.