The operation began Tuesday morning at 20 premises in Dublin
More than 40 vehicles have been seized - along with significant amounts of cash - during searches targeting serious organised criminal activity in Dublin.
Jewellery and a number of watches were also seized along, with considerable amounts of documentation and electronic equipment.
The operation began at around 10.00am at 20 premises in the Dublin area on foot of search warrants.
It was conducted by officers attached to the Criminal Assets Bureau (CAB) and the Garda National Drugs and Organised Crime Bureau.
Gardaí say the operation is a result of an ongoing multi-agency investigation involving the CAB and others - including the Special Crime Task Force.
It is investigating serious organised criminal activity in Dublin, and suspected money laundering operations.
Gardaí say investigations are ongoing.