Gardai have arrested and questioned a man as part of a detailed investigation into money laundering in the capital.
Officers from the fraud squad arrested the suspect in the Ballybough area of Dublin's north inner city on Tuesday and he was brought to Store Street Garda Station.
Sources have revealed that the man was questioned by detectives about alleged money laundering offences that happened at money transfer shops in the city throughout 2013.
Officers are trying to establish if the suspect had been carrying out the alleged money laundering activities on behalf of a north-Dublin crime gang.
The suspect was later released without charge and investigations into his alleged activities are continuing by fraud squad detectives.
In a completely separate case, gardai are continuing to monitor the activities of a south-Dublin businessman who is suspected of involvement in laundering millions of euro of cash from burglaries which were carried out by the gang who were led by 'Fat' Andy Connors who shot dead in his Tallaght home last August.
A relative of the businessman is also heavily involved in a major Tallaght-based Traveller family gang which has been involved in literally hundreds of burglaries across the country in the past five years.
The Traveller gang, which has over 200 members, is the chief target of the garda's Operation Fiacla and includes members of the notorious Cock Wall clan who have been successfully targeted by the Criminal Assets Bureau in the past.
Meanwhile, in a report which was released by Grant Thornton earlier this year, it was estimated that €5.4bn had been laundered in Ireland in 2012.
It said that while measures to combat money-laundering here have improved, with the delayed implementation of a European directive there has been a growing international demand for illicit goods and transactions.
The report said criminals and terrorists have sought to exploit the country's open economy.
Grant Thornton explained that once criminals had taken the risk of introducing their cash into the system, they could use multiple layers of international transactions to find a seemingly legitimate destination for the loot.