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.
UCD Study To Lay Bare The Blight Of 'Sheep Worrying' Across Wicklow
There's hardly a sheep farmer in Wicklow who hasn't been affected according to expert
“A Secure Home In Time For Christmas” - Boost For Blessington With New Cost Rental Plans
28 new affordable rental homes are coming to Blessington
Man Due In Court After Back-To-Back Robberies In Bray
Wicklow Housing Growth Remains Strong
The latest Department of Housing figures reveal almost one thousand new homes were commenced throughout Wicklow in the first seven months of this year.
Emergency Road Closure at Cappagh Next Week
Traffic management and diversions will operate on Tuesday 25th & Wednesday 26th August.
2:00pm - 6:00pm
More Music Weekend
Sunny intervals
High: 18°C | Low: 10°C
Sunny intervals
High: 17°C | Low: 11°C
Sunny intervals
High: 18°C | Low: 8°C
Sunny intervals
High: 20°C | Low: 7°C
Sunny intervals
High: 21°C | Low: 5°C