The Public Health Agency in Northern Ireland has identified a cluster of Covid-19 cases in the Limavady area in Derry.

The cases are linked to a social house gathering, according to the PHA.

Testing and contact tracing is now under way and a mobile testing unit has been set up in the town to help prevent any further spread.

Northern Ireland's Health Minister, Robin Swann said they had long anticipated and warned that clusters will happen.

He said :"The virus is still present in our community and must never be underestimated.

"Please stick to social distancing at all times and keep washing your hands regularly with the same rigour as at the start of this pandemic."

Chief Medical Officer Dr Michael McBride said: "Today's news underlines once again that we have to keep up our guard against Covid-19.

"Social gatherings in private residences have been an issue on both sides of the border."

Mr McBride said they are facing a "very uncertain next few months and the very real prospect of a very challenging autumn and winter".

"We have made important strides forward against the virus, but we must always remember that we have a long way to go," he said.

The PHA said this type of occurrence is to be expected with lockdown restrictions being eased which is why the Test, Trace and Protect programme is in place.

It said it will continue to monitor all cases of Covid-19, look for trends and linked cases, and advise or inform the public of any increased risk to health.

No Covid-19 related deaths have been recorded by the Department of Health in the past 24 hours while there have been a further 16 cases.