NO Covid-19 patients were being treated in intensive care units in the north over the weekend.
In a further milestone in recovery from the initial wave of the pandemic, it is the first time since daily figures were produced that ICU treatment figures dropped to zero.
The news came as it emerged that one more death due to the virus had been recorded yesterday.
The Department of Health's death toll now stands at 550.
South of the border, Covid-19 claimed another six lives on Saturday and one yesterday.
The latest figures came as the Republic's Chief Medical Officer, Dr Tony Holohan, said the number of new cases of Covid-19 in younger people was now a real concern.
He said 2020 was "a year for a staycation" and urged people to remain in Ireland.
Read More: Number of Covid-19 cases associated with travel ’grave concern’
It also emerged that worldwide 10 million people have contracted the virus.
In Britain the coronavirus death toll rose by 36 yesterday to 43,550. Most of the deaths were in England.
Scotland recorded no new coronavirus deaths for a third consecutive day.
But despite the easing of restrictions, the city of Leicester may be facing a localised lockdown after a rise in cases.
Figures on June 16 showed about quarter of the city's 2,494 cases so far were reported in the previous two weeks.
The worrying development came as a leading scientist warned about the danger coronavirus continues to pose.
Sir Jeremy Farrar, a member of the government's Scientific Advisory Group for Emergencies (Sage) and director of the Wellcome Trust, said there could be a "very nasty rebound" of the virus in the winter.
"We're on a knife edge, it's very precarious the situation, particularly in England at the moment, and I would anticipate we would see an increase in new cases over the coming weeks," he told BBC's Andrew Marr show.
Meanwhile, churches will be able to reopen for worship from today, with individual parishes making arrangements to ensure proper hygiene and social distancing.
Bishop Larry Duffy of the Diocese of Clogher urged people to spread out their attendance at Mass.
“I wish to remind all parishioners that the Sunday and holy day obligations are dispensed with for the time being,” he said.
“That means that you can go to Mass on any day of the week.
“This is important. It is important because it means that people need to spread out their attendances so that everyone gets a chance to partake in the sacred mysteries.
“I ask that everybody inform themselves of what the local parish has arranged and planned for the return to public celebrations of Mass.”
Church of Ireland Archbishop of Armagh John McDowell also welcomed the return to worship.
"It could hardly be more fitting that it is St Peter’s Day on which we symbolically receive the keys of our churches to enter them again, over the days and weeks to come, as the people of God; to worship his holy name and to gather together as the household of faith,” he said.
“For this we give thanks to God.”
