Customs officers have seized eight million cigarettes at Dublin Port, worth an estimated €3.1m.
An Irish registered commercial vehicle and a refrigerated trailer were seized and the driver, an Irish man in his mid-40s, was interviewed.
Revenue said investigations are ongoing both nationally and internationally.
The Top Mountain, Bon International, Royal and Jim brand cigarettes arrived into the port yesterday from Rotterdam in a shipment described as "chilled foodstuffs".
When the refrigerated unit was examined after routine scanning, Revenue officials discovered the smuggled cigarettes in boxes labelled "Garlic & Cheese Tear & Share".
The haul brings the total amount of contraband cigarettes seized by Revenue to date in 2012 to 89.5m.