Some 54,000 cigarettes have been seized in Fermoy, Co Cork, after an operation involving Revenue's Customs Service.
The 'Bon International' brand have a retail value of €23,000 and represents a potential loss to the Exchequer of €18,300.
An Irish man in his 60s was questioned over the incident, and the vehicle involved was seized.
Revenue was assisted in the operation by gardaí from Fermoy Garda Station.
Anyone with information regarding the smuggling or sale of illegal cigarettes has been asked to contact Revenue in confidence on Free Phone Number 1800-295295.