Local Minister Heather Humphreys has welcomed joint actions by the gardaí and PSNI in tackling cross-border crime.
It follows the arrest of nine people as part of an investigation into paramilitary activity yesterday.
Seven searches were carried out in Donegal and Dublin, targeted at illegal drug crime linked to the INLA.
A number of electronic devices were seized, and eight men and one woman were arrested in Derry.
Cannabis, controlled drugs and a large amount of cash was also seized as part of the two-day operation.
The acting Justice Minister says the "strong on-going co-operation is having a significant impact in tackling cross border crime".
Minister Humphreys added that the Joint Agency Task Force "will continue to target criminal gangs who want to exploit the border".
