Gardaí at the scene today
More details have emerged following a search operation that was carried out in the Ballymacool Estate area of Letterkenny on Saturday morning.
Gardaí have confirmed that a search operation was conducted under warrant at a residence at approximately 11.30am.
A garda statement said: "Gardaí attached to the Dog Unit and Armed Support Unit assisted local, uniform Gardaí during the course of the operation. A number of items were seized during the course of the search."
Investigations are ongoing.