Revenue officers have seized over 540 litres of wine, beer and spirits at Dublin Port.
The seizures happened over the weekend and this morning.
They discovered the alcohol in a van and two trucks that had disembarked ferries from the UK.
The three drivers, all men in their 30s and 40s, have been questioned.
Revenue says the alcohol seized has a total value of more than €6,000 and represents a potential loss to the Exchequer of more than €3,000.
