A man in his 20s has been arrested as part of an investigation into a series of pipe bomb attacks in Dublin.
The man was arrested after garda searches near a halting site in Darndale.
Two pipe bombs were recovered, along with a number of firearms and a quantity of ammunition.
The Army Bomb Disposal Team and more than 80 uniformed and armed gardaí are involved in the ongoing operation.
The searches follow on from pipe bomb attacks in the Coolock and Rivermount areas last Thursday and Friday.
Gardaí believe the attacks are linked to the ongoing feud between criminal gangs and the Real IRA.
The man arrested is being detained at Coolock Garda Station.