Gardaí have raided more than 20 properties including a pub, a hotel and a number of solicitors and accountants' offices in Dublin and Meath as part of an investigation into IRA money laundering.
More than 100 detectives carried out the searches over four days last week in an operation being led by the Criminal Assets Bureau.
Gardaí believe the pub and the hotel were bought with the proceeds of crime and are being used to launder IRA money.
Three businessmen are suspected of being involved.
A man in his 50s from south Armagh is believed to be at the centre of the illegal operation.
