The PSNI has revealed that Semtex plastic explosive and a horizontal mortar were among weapons found during searches over the Easter weekend aimed at dissident republicans.
The searches in east Tyrone and south Armagh also uncovered 25kg of home-made explosive, an automatic weapon, ammunition, timer power units and a detonator.
The searches followed the arrest of three men in Keady on Good Friday.
The three were later charged after machine guns and rifles were found in a car they were travelling in.
They have not been charged in connection with the other weapons found in the follow-up searches.
