Three men have been arrested in Rathkeale, Co Limerick, in connection with dissident republican activity.
The men were detained after gardaí stopped and searched two cars in Kyletaun at about 2am on Saturday.
During the course of the search a suspected firearm and ammunition were discovered and seized.
The arrests were made as part of ongoing investigations into dissident republican activity.
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The men are currently being held at Henry Street Garda station under Section 30 of the Offences Against the State Act, 1939.