Over €235,000 in cash and 3,640 cigarettes have been seized in Leitrim and Longford.
It's after Revenue, supported by Detector Dog Toby, searched four buildings in the two counties, under warrant, on Wednesday.
The illegal cigarettes are worth around €3,300, representing a potential loss to the Exchequer of around €2,600.
Revenue was given detention orders for the cash in Sligo and Mullingar district courts yesterday and three men were questioned.