The PSNI said it has discovered a significant terrorist hide containing bomb-making components in a country park in Co Antrim.
The find follows a security operation yesterday in Belfast when two viable explosive devices were found.
Police and British army bomb disposal officers searched Carnfunnock Country Park at Ballygally on the Antrim coast road near Larne, after a member of the public reported seeing a suspicious object.
During the search operation, security forces uncovered a number of small plastic barrels which had been buried in a wooded area in the park.
Police said that inside the barrels they found a significant amount of bomb-making components including partially constructed devices and a small quantity of explosives.
The items were taken away for a detailed forensic examination. The PSNI said that until the examination is completed it was too early to link the explosives to any particular grouping, but said they were following a number of lines of inquiry.