A multi-million euro drug trafficking ring believed to be run by a man in prison has been uncovered by gardaí.
Three men were arrested in Dublin yesterday evening following the seizure of €5m worth of heroin.
Gardaí are describing the arrests as significant.
The seizure is the result of a garda operation targeting a drug dealing network they believe is run by a man in prison.
At 5pm, officers from the Organised Crime Unit and the national and Clondalkin drugs units raided a storage company in Clondalkin and discovered 20kg of heroin worth €4m.
A 24-year-old man was arrested there and a 36-year-old man was detained nearby.
The 36-year-old, who is from Tallaght, is believed to be the organiser and a dealer with connections to Limerick and Cork criminal gangs.
He is also currently on bail on other drugs charges.
A parked car was also searched on Sperrin Road in Crumlin and another 5kg of heroin worth €1m seized.
A third man in his 30s, from Cabra in Dublin, was arrested in the city.
Gardaí have been targeting this supply network for some time and further searches and arrests are expected.
