Gardaí from Coolock stopped and searched an 18-year-old man on Manor Drive in Coolock at approximately 7.35pm yesterday evening.
During the course of the search cocaine - subject to analysis - with an estimated street value of €150,000 was located in a black bag in his possession.
The man was arrested and is currently detained at Coolock Garda Station under the Provisions of Section 2 – Criminal Justice (Drug Trafficking) Act 1996.
Elsewhere, a 17-year-old accused of possession of more than €77,000 worth of ecstasy at his home was refused bail.
On May 27, Gardai searched the teen's home and found the drugs in two shoulder bags in a storage area in his bedroom.
The teen is also alleged to have tried to steal €135 euro worth of alcohol at a Londis store in Adamstown at knifepoint.
He was remanded in custody at Blanchardstown District Court.