Gardai seized almost €100,000 cash during a search of a car in Tallaght.
Two men, aged 29 and 28, were in the car as it was stopped by the Tallaght District Drugs Unit.
The search was carried out at Kilinarden Estate last night at 7.15pm under the Misuse of Drugs Act, 1977-'84.
No arrests were made.
The search was carried out as a result of an ongoing operation into the illegal sale and supply of controlled drugs in the Tallaght area.
The matter is still under investigation.