The Criminal Assets Bureau (CAB) has seized two houses in Limerick from criminal gang member Kieran Keane Junior.
The High Court declared the properties, along with three cars and over €100,000, to be the proceeds of crime.
The houses will be sold and the money handed over to the State.
Head of the Bureau, Detective Chief Superintendent Michael Gubbins, said the seizure is the latest move by CAB to deny and deprive criminals of their ill-gotten gains.
Keane Jr is the son of feuding criminal gang leader Kieran Keane Snr, who was shot dead in January 2003.
The Keane Collopy drugs gang was involved in a murderous feud with the McCarthy Dundon criminal gang, which subsequently led to 14 people being shot dead between 2000 and 2010, before the main gang leaders were convicted and jailed.
Five people are serving life for the murder of Keane Snr after a man who was with him, who the killers thought they had also murdered after he was stabbed 17 times, survived.
Owen Treacy testified against them.
Like his late father, CAB said that Keane Jnr is involved in organised crime and has invested money in luxury goods, cars and houses.
CAB began a major operation five years ago which targeted his money laundering operation.
The bureau forensically analysed his finances and identified €696,000 worth of spending from unknown sources.
CAB discovered money had been spent on travel to Spain, the UK, Lapland and Dubai, as well as on gambling and plastic surgery at a clinic in Lithuania.
The bureau also identified a pattern whereby Keane Jnr acquired property but did not record himself as the owner.
The houses were then rented out to relatives or associates for cash and CAB said that he was the beneficial owner.
Last night, officers finished clearing out, securing and boarding up two of his homes in Limerick - a three-bedroom semi-detached house in Garryowen and a three-bedroom terrace house in Sarsfield Court.
CAB expects the Garryowen property to be sold for around €200,000 and the other one for €175,000.
The bureau told the High Court that Keane Jnr was involved in organised crime and associated with major criminals.
His only record of any income was €12,000, earned in 2015, but he managed to buy a burnt-out house in Caherconlish and sold it in 2018.
Mr Justice Alexander Owens said that some of the profits from the sale of the property comprised part of the €101,000 in a bank account that was seized by CAB and declared the proceeds of crime.
Some of the cash also came from a motor business that he set up.
Mr Justice Owens accepted CAB evidence that Keane Jnr was "a driving force" in organised crime and said it was like the criminal organisation was the source of funds used for all of these properties.
He no longer lives in Limerick and left Ireland five years ago after the bureau began investigating his finances and lives in Spain and Dubai.
The judge also said that if Keane Jnr was in Dubai for a number of years, he must have money to pay his bills because otherwise he would be in jail.
His cars, an Audi A4, a Skoda Octavia and a Volkswagen Amarok, have been sold.
His cash of over €101,000 has been seized, along with his two houses, that are due be sold after Christmas.
CAB said that it will have taken over €500,000 worth of assets from Keane Jnr.
