The drugs were discovered when gardaí searched a truck on the N4 at Lucan
Cannabis worth an estimated €4 million has been seized in Dublin.
The seizure came at around 2.50pm on Friday afternoon when gardaí stopped a truck on the N4 at Lucan.
The truck was searched, and cannabis herb with an estimated street value of over €4 million was discovered.
The driver of the truck - a man in his late 40s - was arrested at the scene.
He is being held at Lucan Garda Station under the provisions of Section 2 of the Criminal Justice (Drug Trafficking) Act 1996.
The truck has been seized, and a technical examination will be carried out.
Gardaí say their investigations are ongoing.