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.
Can You Help Find Tammy?
The 46 year old is reported missing from Dunlavin since Saturday, 24th October.
Fianna Fáil TD Malcolm Byrne In Court Over Drink-Driving Charge
The Wicklow-Wexford TD was stopped at a mandatory checkpoint in Dublin City Centre last May.
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
8:00pm - 10:00pm
Love Songs on the Coast
Light rain shower
High: 12°C | Low: 9°C
Sunny intervals
High: 13°C | Low: 9°C
Light rain shower
High: 11°C | Low: 8°C
Sunny intervals
High: 12°C | Low: 7°C
Sunny intervals
High: 12°C | Low: 6°C
