The operation that led to the detention involved a house search and the search of one other premises, at which 3,248 servings of hasish, 840.6 grammes of cannabis leaves, 160 cannabis seeds, two cannabis plants and two precision scales were seized, the GNR police force said in a statement.

Officers also seized two 9mm-calibre guns, a firearm disguised as a pen, two reproduction firearms, two air rifles, a rifle, €120 in cash, 2,000 projectiles of various calibres, 180 rounds of ammunition, one computer and a mobile phone.

"The detainee was made a person of interest and released on bail," the GNR statement said.