Two people have been arrested after about £330,000 was seized in an anti-money laundering operation in County Tyrone.
Investigators searched four premises
The man and woman from Dungannon were detained by officers from HM Revenue & Customs (HMRC).
Investigators searched four commercial and residential premises in Tyrone.
HMRC's Anne-Marie Gordon said: "This case demonstrates Revenue & Customs' commitment to tackling money laundering."
She added: "Law enforcement agencies in the UK confiscated over £63m from criminals in 2003-04 - of that, £36m was seized by Customs.
"Financial gain drives serious and organised crime. Pro-actively tackling money laundering by seizing cash and assets, thwarts the illegal activity of organised crime groups."
Meanwhile, the police have urged traders to be alert following reports that counterfeit banknotes have been passed recently at retail outlets in north Antrim.
Constable Don Mitchell said checkout staff should always take the time to check each banknote used to pay for goods.
"If concerned that a banknote is counterfeit, they should retain the note, write down the description of the person passing it, where possible the registration number of any vehicles used, and should contact their local police immediately," he said.