Gardai investigating the discovery of cannabis with an estimated street value of 2.5 million euro have made two further arrests.
The detention of two men in their 30s came after two men - one aged in his mid-40s, the other in his early 50s - were arrested during the initial stages of the operation in Tuam, Co Galway, on Saturday.
Around 3,000 cannabis plants were found in a business premises in the town.
The operation in the west of the country follows a raid in Co Meath on Friday night when 1.5 million euro worth of cannabis was seized in a separate investigation.
The plants and herb were discovered by gardai at a business premises in Kells.
A 53-year-old man and 43-year-old woman were detained during that raid.
Gardai described the find in Tuam as a "sophisticated cannabis growing operation".
In Kells, officers said a large cannabis cultivation operation was discovered.
The man and woman arrested in connection with the Kells seizure are expected to appear before Ardee District Court on Monday morning, gardai said.