Five people arrested in Longford earlier this week in connection with an international investigation into money laundering and invoice fraud have been released from custody.
Four men and one woman, who were in their late teens and 20s were arrested in connection with allegations of acting as and recruiting money mules.
They were detained in Longford and Mullingar Garda stations under Section 50 of the Criminal Justice Act on Tuesday but have since been released without charge.
A file will now be sent to the DPP.