Officers stopped a Polish registered truck which came on a ferry from France and found the cigarettes within its load.
They have a retail value of €2.4 million, which is a potential loss to the exchequer of over 1.8 million.
A man in his 40s is being questioned as part of the investigation.
Wicklow Surgeon Honoured By Tallaght University Hospital
Arklow born Surgeon Is Included In Tallaght Hospital Staff Hero Award Winners for 2026
Extra Lifeguards Deployed With Extended Hours On Wicklow Beaches This Week
The Irish Coast Guard is urging anyone planning an activity on or near the water to keep safety in mind, and be aware of the serious risk of cold-water shock.
Bus Service Boost For Wicklow with Connections to Carlow & Kilkenny
A revised local link route will provide direct access to Arklow Train Station from Monday.
Greystones Man Given Suspended Sentence Following Sustained Campaign Of Abuse
A 'sustained, persistent and vile' campaign against an unsuspecting former golf manager in Co. Wicklow after one man was left aggrieved by decisions made at Druid's Glen
Appeal for Information As Rathdrum Man Reported Missing
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Light rain
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Light rain
High: 20°C | Low: 13°C
Light rain
High: 20°C | Low: 13°C
Light rain
High: 22°C | Low: 12°C
Light rain
High: 21°C | Low: 12°C