One of two men still held in Dublin dissident republican probe

One of two men arrested in the Republic as part of an ongoing investigation into dissident republican activity has been released without charge.

The men, both of whom are in their 30s, were arrested by gardai on Monday morning.

The second man remains in police custody in Clontarf.

The arrests were made as part of an operation carried out by the Special Detectives Unit in north County Dublin.