The Criminal Assets Bureau has carried out a search in Galway aimed at targeting the assets and activities of a gang member.
CAB says the organised crime gang is involved in burglary and theft.
This morning's operation relates to the theft of high-end vehicles and machinery across the country.
The search took place at a house in Tuam.
Documents relating to accounts, and the purchase of vehicles and property were seized.
A Revenue Assessment for approximately 500,000 euro was served on an individual.