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.
Performance Report Offers Praise & Flags Areas Of Improvement for Wicklow County Council
Wicklow is strong on housing vacancy and online motor tax, but re-letting times and retrofits lag behind national picture, reports NOAC.
UPDATE: Three Car Collision Cleared from the N11 at Glen Of The Downs
The northbound lanes approaching Delgany have reopened.
Over 50 Free Events, Performances & Workshops For Wicklow Culture Night
Wicklow Culture Night 2026 Is Here!!!!
Penalty Points Drive Up Insurance Costs for 16,000 Wicklow Drivers
More than 12,500 Wicklow drivers have three points, 294 have 9 points, and 41 are on 12 points, the threshold for disqualification.
Irish Farming Could Face 'Cliff Edge' With One In Three Farmers Planning Exit
One in Three Farmers Plan to Leave Within Five Years, Survey Reveals
10:00pm - 1:00am
Relaxing favourites with Traic O'Braonain
Sunny intervals
High: 18°C | Low: 13°C
Sunny intervals
High: 18°C | Low: 13°C
Sunny intervals
High: 18°C | Low: 11°C
Sunny intervals
High: 17°C | Low: 12°C
Sunny intervals
High: 18°C | Low: 12°C