Mid and East Antrim, Belfast and Antrim and Newtownabbey, could be forced into a lockdown today to help curb the spread of COVID-19.
The NI Executive is due to meet today (Thursday) to discuss a way forward following a rise in the number of positive cases since lockdown measures were eased.
Newtownabbey, Belfast, Carrickfergus, Ballymena and Larne have all seen a rise in cases over the past week and concern has been expressed.
Health Minister Robin Swann, the chief medical officer and the chief scientific advisor have all warned that local lockdowns could be implemented in a bid to contain certain hotspots.
Mr Swann said a permanent lockdown might keep COVID-19 rates very low, but it would have massive repercussions for society and individuals.
“We have as always to maintain a delicate balance. But I will say this.
“The time is coming for the Executive to consider fresh and concrete actions to prevent further spread of the virus. That could include imposing localised restrictions, or introducing more general measures or a combination of both.
“Given where we are now, this Thursday’s meeting of the Executive will have important decisions and options to consider,” he said.