US Authorities have begun to take action against a major international money network with operations based in Shannon.
Canadian Payments Processor PacNet Group is accused of clearing money based on scams including fake lottery wins, sweepstakes and letters from psychics.
Legal papers show the PacNet group has seven companies based in Shannon
The Canadian-registered firm, which processes international payments, is now under intense scrutiny following a joint operation between the US Treasury Department, Deparmment of Justice and US postal Service.
They claim that the company has "a lengthy history of money laundering", and that it has "knowingly processed payments on behalf of a wide range of mail fraud schemes."
Court documents show PacNet has been operating for nearly 20 years, and claim that it processed payments worth tens of millions of dollars for over 100 postal fraud campaigns last year.
12 individuals are named in the papers, including four with addresses in Clare and another based in Limerick.
The company has yet to comment.