So far, the investigation has led to the arrest of two people.
Gardai seized cash, phones, and documents during a search this morning as part of an investigation into an organised crime group suspected of trafficking illegal immigrants.
Officers from the Garda National Immigration Bureau carried out the search in Co Dublin and discovered 16-thousand euro in cash along with five mobile phones.
The joint operation is being carried out by gardai and authorities in the UK, into a gang suspected to be laundering money and smuggling illegal immigrants, by producing, distributing and using false documents.
So far the investigation has led to two people being arrested and charged in connection with theft and fraud offences, as well as 33-thousand euro being frozen in a bank account.