Gardaí have seized heroin with a street value of €600,000, in Dublin overnight.
The haul followed a joint surveillance operation by Sundrive Drugs Unit and the National Drugs Unit in the Rialto area of the city.
A man (21) was arrested and is being held and questioned at Sundrive Garda Station under the provisions of Section 2 of the Criminal Justice (Drug Trafficking) Act, 1996.