Two men, in their 50s and 20s, are due in court this morning charged in connection with a drug seizure in Dublin on Saturday.
Officers stopped and searched a car on Balbutcher Lane and discovered cannabis herb.
In a follow-up operation, cannabis herb, cocaine and diamorphine was seized in Santry.
The total value of the haul is estimated to be €400,000.
The other people arrested as part of the investigation, two men in their 20s and 30s and a woman in her 20s, have been released without charge.
Files will be prepared for the Director of Public Prosecutions.