Gardaí in Dublin are questioning three men in their forties in connection with dissident republican activity.
The men - who are aged 42, 44 and 47 - were detained at the North Circular Road yesterday as part of an ongoing operation.
A large sum of counterfeit money was recovered along with a range of printing equipment and computers when four houses in the north Dublin area were searched along with a commercial premises in County Meath.
The men are being questioned at the Bridewell and Mountjoy Garda Stations.