A search operation targeting dissident republican groups has been carried out near the village of Omeath, Co Louth.
Yesterday, ammunition and other items were found during the operation on Cooley Peninsula.
Searches were carried out in a wooded area where around 1,000 rounds of ammunition, and what gardaí believe to be a mortar tube, were discovered.
The planned operation was part of an investigation into the activities of dissident republicans.
It involved officers from the special detective and emergency response units assisted by gardaí from the Louth division.
No arrests have been made.