Three men were arrested and €110,000 of suspected cannabis herb and plants in Cork and Dublin were seized last week, gardaí said on Saturday.
A car was stopped on the M8 motorway in Mitchelstown, Co Cork shortly before 9pm on Thursday January 30th, the garda statement said.
A search of the car was carried out and gardaí discovered €20,000 of suspected cannabis herb,pending analysis, and €1,000 in cash in the boot.
Two men, in their 20s and 30s, were arrested at the scene and were brought to Fermoy Garda Station.
They were detained under Section 2 of the Criminal Justice (Drugs Trafficking) Act 1996 and were later charged to appear before a special sitting of Cork City District Court on Saturday morning.
As part of the investigation, a search was carried out by gardaí attached to a community action team at a house in Hollystown, Dublin 15 later that evening.
During the search, gardaí seized €8,000 in cash, €76,000 of suspected cannabis herb and four pop-up tents containing €14,000 of suspected cannabis plants with growing and ventilation equipment.
Over 3,000 suspected counterfeit currency in euros, dollars and sterling was also seized.
A man in his 30s was arrested at the scene and brought to Blanchardstown Garda Station where he was detained under Section 2 of the Criminal Justice (Drugs Trafficking) Act 1996
He appeared before the Dublin District Court on Saturday morning.
A third search was carried out at a house in Co Meath but nothing was seized and no arrests were made.
Speaking at Fermoy Garda Station, Superintendent John Deasy said: "Yesterday's seizure highlights the dedication of our roads policing units to not only reduce the deaths on our roads, but to deny criminals access to the road network throughout the country."