A number of searches have been carried out in the Republic of Ireland and Spain as part of an investigation into cross-border organized crime, Gardaí said.
Irish broadcaster RTÉ has reported that the investigation concerns the activities of organized crime group Hutch.
The group is suspected of being involved in money laundering in a number of jurisdictions.
At the request of the Spanish authorities, a property in Dublin was searched.
Ten searches were carried out in Spain, with gardaí present in support of the Guardia Civil (Spanish police).
A Civil Guard officer is present during the search in Dublin.
The operation is part of a collaboration between the Garda National Bureau of Criminal Investigation (GNBCI) and the Guardia Civil in Spain, targeting a group based in both countries.
A previous search targeting the same group was carried out in Lanzarote in June 2022 by Guardia Civil on behalf of GNBCI.
The Guardia Civil told RTÉ that the investigation is ongoing and that they cannot provide any further information due to a “secrecy order” in Spain.
The Hutch organized crime group is a violent, transnational drugs gang based in Dublin.
The group has been embroiled in a nine-year feud with organized crime group Kinahan, which has claimed 18 lives.