Nine people have been arrested in connection with dissident republican activity in Dublin.
Eight of the arrests happened after gardaí searched a house in the Tallaght area.
A 46-year-old man was later arrested after gardaí searched a number of containers in a yard at Cloghran, Co Dublin.
During the course of this search a quantity of ammunition and component parts of explosive substances were discovered.
The 46-year-old man is being held at Ballymun Garda Station, while the others are being held at various garda stations in the west of Dublin.