A female garda has been arrested in connection with the leaking of information which led to the resignation of Trevor Sargent.
The former Junior Minister stepped down after a newspaper revealed he had written to gardaí about a constituent who was facing criminal proceedings.
The garda who is aged in her 30's was arrested at 10.30am this morning and is being held at Lucan garda station.
It is understood she was stationed at Balbriggan garda station at the time Mr Sargent wrote the letters, but has since transferred to another area.