Cannabis worth an estimated €840,000 has been seized at a post sorting centre in Co Laois.
Some 42kg of the drug was discovered at An Post's Portlaoise Mail Centre on Monday, Revenue said in a statement.
It said the haul was found when a sniffer dog named Stella gave a positive reaction to a parcel sent from West Africa to an address in north Dublin.
The manifest on the parcel described the contents as “food and spices”, Revenue said.
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The investigation into the incident is ongoing.
Earlier this month, Revenue seized 15kg of cannabis worth an estimated €300,000 at the same location.
On that occassion the haul was also marked as “food and spices” and had been sent from West Africa to an address in North Dublin.