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.
No Changes To Starting Team As Wicklow Football Yearns For Historic Croker Triumph
Wicklow name unchanged team for Tailteann Cup final against Down
Wicklow Braced Once More As Coillte Signal Orange Fire Warning
Public is warned against fires or barbecues in forests or recreational areas, no blocking of emergency access routes, extra vigilance around dry vegetation
Wicklow Boss Targets Tailteann Cup Glory As Down Challenge Looms At Croke Park
'It's not worth a big pile unless we actually go and win it' says the positive Wicklow boss
Wicklow TD Calls For Straw Incorporation Funding For Struggling Tillage farmers
Brian Brennan presses Government for a decision on the Straw Incorporation Measure for struggling tillage sector
New Operator at Wicklow Gaol Brings A Reopening Date Closer
Major refurbishment works at the Wicklow tourist site are nearing completion.
6:00am - 8:00am
The Wicklow Way with Nikki Hayes
Sunny intervals
High: 23°C | Low: 15°C
Sunny intervals
High: 22°C | Low: 14°C
Sunny intervals
High: 25°C | Low: 14°C
Sunny intervals
High: 25°C | Low: 13°C
Sunny intervals
High: 28°C | Low: 15°C