A sniffer dog was used in the seizure of €280,000 in cash at Rosslare Europort.
Revenue made the discovered the large sum of money in the floor of an unaccompanied freight trailer in Co Wexford on Wednesday.
Officers were granted a three month cash detention order at a special sitting Gorey District Court on Thursday evening.
Revenue’s mobile x-ray scanner and detector dog Flynn led to the discovery of the money which is suspected to be the proceeds of criminal acitivity.
A spokesman said: "At a special sitting of Gorey District Court, Revenue officers were granted a three month cash detention order by Judge Gerard Furlong.
"This followed the seizure on Wednesday of over €280,000 in cash when Revenue officers, as a result of routine profiling, searched an unaccompanied freight trailer at Rosslare Europort.
"The search, with the assistance of Revenue’s mobile x-ray scanner and detector dog Flynn, led to the discovery of cash in the floor of the freight trailer.
"The cash is suspected to be the proceeds of, or intended for use in, criminal activity and is detained by Revenue in accordance with proceeds of crime legislation. Investigations are ongoing."
He added: "These routine operations are part of Revenue's ongoing work targeting smuggling and shadow economy activity.
"If businesses, or members of the public, have any information, they can contact Revenue in confidence on Confidential Phone Number 1800 295 295."
