Gardaí seized an estimated €20,000 of cocaine last night during the planned search of a house at Greenfort Cresent, Clondalkin.
The drugs were found during the search of the house at Greenfort Cresent, Clondalkin shortly after 9pm.
A 29 year-old man was arrested for questioning under the Drug trafficking Act but was later released without charge.
Gardaí said a file would be prepared for the Director of Public Prosecutions.
