Up to 100 ravers allegedly broke Covid-19 rules by attending a massive party near Dublin.
Video clips, which have been circulating on social media in recent days, shows people dancing the night away at the secret location.
In the footage, there appears to be little or no social distancing, while the people shown also don't seem to be wearing face masks, Dublin Live reports.
Level 3 rules state that no organised indoor gatherings can take place and those found breaching these restrictions can face as much as a €2,500 fine or a spell in prison of six months.
Tickets for the large gathering were being sold for €30 with people being added to a WhatsApp group chat for further instruction and information once their ticket was purchased.
Those attending were promised an 'all-night' rave which would start at 9pm and finish the following morning at 6am with numerous DJs providing the entertainment which was being advertised as techno and dance music.
Gardai have been contacted about the incident.
For the latest news and breaking news visit irishmirror.ie/news.
Get all the big headlines, pictures, analysis, opinion and video on the stories that matter to you.
Follow us on Twitter - the official Irish Mirror Twitter account - real news in real time.
We're also on Facebook - your must-see news, features, videos and pictures throughout the day from the Irish Daily Mirror, Irish Sunday Mirror and irishmirror.ie.
You can also get in touch with us via our Instagram account.