A yacht has been detained off the Kerry coast and three men have been arrested on suspicion of drug trafficking.
The arrests come as part of a multi-agency operation.
It is believed Naval Service personnel detained the yacht and the men were brought ashore at Kinsale Pier in Cork this morning.
They were taken to Bandon Garda Station where they are being held under Section 2 of the Drugs Trafficking Act.
A detailed forensic examination is taking place at the Castlepark Marina in Kinsale harbour.
It is understood that no drugs have yet been found on board and the search is continuing.