Four men have been arrested by Gardaí targetting the activities of criminal groups involved in drug trafficking.
A number of houses were searched in Blanchardstown, Mulhuddart and Clonsilla in West Dublin today.
Cannabis plants and Herbal Cannabis with an estimated street value of €1.5m was seized along with €20,000 in cash.
Four men aged in their 30s were arrested during the operation.
They are currently detained at Blanchardstown and Ballymun Garda Stations.