Gardaí in Ballyfermot last night seized heroin worth an estimated €100,000.
A 1/2 kilo of the drug was seized following a planned search of a house at Landen Road, Ballyfermot at 6pm. Three people were arrested under Section 2 of the Drug Trafficking Act.
Two men in their twenties and one 23 year old woman are being questioned at Ballyfermot Garda Station.