John Gilligan has been arrested in Northern Ireland and charged with money laundering offences.
The 66-year-old from Dublin was detained at Belfast International Airport while attempting to board a flight to Spain.
Border patrol officers recovered €23,000 at the scene, according to the UK's National Crime Agency.
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He appeared before Coleraine Magistrates Court and was remanded in custody.
He's due to appear in court again before Antrim Magistrates Court on Tuesday September 4th.