Gardaí have recovered three shotguns and a small quantity of ammunition during a search at a national school on Basin Lane, Dublin 8.
The searches were carried out following reports of suspicious activity in the school grounds in the last number of days.
Gardaí discovered the firearms, which were wrapped in plastic, on the roof of the school at about 11.30am.
The area was sealed off for a forensic technical examination before the guns were removed for further examination.
An investigation into the incident is ongoing and anyone with information is asked to contact Kilmainham Garda station on 01-6669700.