All those in attendance will be issued with Fixed Penalty Notices.
Bar equipment and a small quantity of suspected cocaine was seized by Gardaí after a search of a private premises in Dún Laoghaire on Saturday, 13 March.
Gardaí investigating alleged breaches of liquor licencing legislation in support of current public health measures received reports of a number of persons gathered at a private premises in Monkstown.
A shebeen was discovered at the location and all those in attendance will be issued with Fixed Penalty Notices for an alleged breach of Regulation 4 of the Health Act, 1947 Regulations.
One man, aged in his 20s, was arrested for public order offences but has since been released without charge pending consideration for the Adult Caution scheme.
A subsequent search of the premises was conducted under warrant and Gardaí seized a number of beer taps, kegs, gas cylinders and other bar equipment. A small quantity of suspected cocaine was also seized by Gardaí.
Gardaí said enquiries are ongoing and a file will now be prepared for the Director of Public Prosecutions.
