Around €40,000 was frozen in a bank account after phones and electronic devices were seized in a number of raids by the Criminal Assets Bureau this morning.
Officers searched two homes in Dublin 15 and Dublin 6, as well as two professional premises in Dublin 2 and Co Laois.
The searches were carried out by CAB personnel supported by the Emergency Response Unit, local gardai and officers from the Garda National Immigration Bureau.
The bust was described as a "significant development" in an investigation targeting an organised crime gang involved in the sale and supply of drugs.
CAB are also currently investigating the beneficial ownership of a home in south Tipperary, as well as another house in north Cork.
A garda spokeswoman said: "Documentation, phones and electronic devices were seized during the course of the operation and will be analysed by specialist CAB Analysts.
"Approximately €40,000 has been frozen in an account in a financial institution pursuant to Section 17 of the Criminal Justice (Money Laundering and Terrorist Financing) Act, 2010.
"No arrests were made."
