Gardaí have seized around €600,000 worth of MDMA in Dublin.
The force's drugs unit raided a house in Lucan this morning and made the seizure.
They were helped by Revenue Officers and the Garda National Drugs and Organised Drugs Bureau.
A young male was arrested at the scene and taken to Ronanstown Garda Station for questioning.
He has since been released without charge and a file will now be prepared for the Director of Public Prosecutions.
Investigations are continuing.