The PSNI are today carrying out a number of raids in County Derry a part of an investigation into organised crime.
The operation is part of a continuing investigation into money laundering by an organised criminal network in the north west, police said.
A total of 18 commercial premises and homes in Dungiven, Park, Claudy and Derry were searched this morning. There were no arrests.
However, a large number of financial documents, several computers, a quantity of illegal cigarettes and controlled drugs were seized during the operation.