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 Pumped With Pride At IPD Awards
The Murrough Pump Track took first place in the Community Youth Initiative category.
Shimmer Boy Crowned 'A New Local Hero' 2026 At Dublin Finale
A New Local Hero is part of Irish Music Month, an initiative of Hot Press and the Independent Broadcasters of Ireland
Bray Wanderers Cruise Into First Division Playoff Final After Easing Past Kerry
Seagulls book Play-off Final spot with 5-1 aggregate win, with UCD next on Sunday
Lakers Is Back! Bigger, Brighter and Rebuilt.
Cue the celebrations! Lakers Sports & Social Club is marking the official completion of its rebuild and an exciting new chapter.
Dublin Marathon Pioneer Arklow’s Mary Nolan Hickey To Present Cup That Bears Her Name
Mary Nolan Hickey, who ran the first Dublin Marathon in 1980, will present the cup to the women’s elite winner on Sunday
10:00pm - 1:00am
Relaxing favourites with Traic O'Braonain
Sunny intervals
High: 13°C | Low: 9°C
Sunny intervals
High: 12°C | Low: 9°C
Sunny intervals
High: 12°C | Low: 7°C
Sunny intervals
High: 11°C | Low: 5°C
Sunny intervals
High: 13°C | Low: 3°C