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.
JP Nolan Return Boost For Wicklow Who Remain Unchanged For Tailteann Test At Croker
Wicklow stick with a winning side as Oisin McConville names unchanged team for Tailteann Cup semi-final against Offaly
CBS News Highlight Greystones' Efforts To Shield Children From Dangers Of Mobile Phones
CBS News has shone an international spotlight on Greystones after featuring local schools' pioneering efforts to protect children from the harmful effects of smartphones and social media. The report focused on the town's "It Takes a Village" initiative, which encourages parents to delay giving children smartphones and promotes healthier alternatives to screen time.
Uisce Eireann Issue Appeal With A Third Of Irish People Disengaged With Water Conservation
The appeal follows the warm spell in May when more than 680 million litres of water was used in the Dublin area alone in a single day
Wicklow Shoppers Urged To Check Ready Meals Following Recall
A number of Pettitt's Kitchen ready meals sold in local SuperValu stores are impacted.
Former Donard Health Centre Secured For Community Use
This boost for the village is an important step in supporting community life and rural sustainability in west Wicklow.
6:00am - 8:00am
Light rain shower
High: 17°C | Low: 11°C
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High: 17°C | Low: 11°C
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High: 21°C | Low: 9°C
Sunny intervals
High: 21°C | Low: 9°C