116kg of the drug were discovered after a search operation in the county yesterday.
More than €8m worth of cocaine has been discovered in the midlands.
A man in his 30s is being questioned following the seizure, in Laois yesterday afternoon.
116kg of the drug was discovered yesterday as part of Operation Tara, following a search operation at a residential address and lands in Laois.
A number of electronic devices were also seized.
The entire haul has now been forwarded to Forensic Science Ireland for analyses.
It's part of ongoing efforts to target organized crime.
Speaking afterwards, senior Gardai said they are determined to continue dismantling drug trafficking routes into Ireland.
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