Gardai were allegedly forced to deal with dozens of party goers in a Dublin city park last night.
The various groups were reportedly seen with alcohol during the mass gathering at Albert College Park which went on late into the night.
Residents were up in arms as the party is understood to have lasted for several hours.
They complained of noise disturbances to Gardai who arrived on the scene just before midnight to remove the crowds.
A spokeswoman for Gardai said: "Officers attended an incident on the Ballymun Road on Thursday night.
"A number of persons were gathered in the area.
"Gardaí engaged with those present and the crowd dispersed.
"Gardaí are conducting further enquiries into potential breaches of public health regulations.
She added: "Enquiries are ongoing at this time."
For the latest news and breaking news visit dublinlive.ie/news.
Get all the big headlines, pictures, analysis, opinion and video on the stories that matter to you.
Follow us on Twitter @DublinLive - the official Dublin Live Twitter account - real news in real time.
We're also on Facebook/dublinlive - your must-see news, features, videos and pictures throughout the day from the capital.
