A man in his 20s has been arrested following the seizure of a quantity of heroin and cocaine at a house in Ballyfermot.
He is being detained at Ballyfermot Garda Station under Section 2 of the Drug Trafficking Act.
Gardaí found the drugs after searching a house in the Cherryorchard area shortly after 1am this morning.
A garda spokesman said depending on the result of forensic analysis the drugs may have a potential street value of up to €600,000.