The Criminal Assets Bureau has searched 10 properties in Dublin.
It is part of an operation against organised crime, with the Kinahan gang understood to be the targets of this morning's searches.
Nine properties in Inchicore, Drimnagh and Finglas and one in Co. Wicklow were searched and are described as professional offices.
Three high powered cars were seized as was almost €30,000 in cash, 20 designer watches, and a small quantity of cocaine and cannabis.
Professional diamond measuring equipment was also part of the seizure.
Over €20,000 has been frozen in financial institutions.