The former GSOC investigator who quit after attending a party with Gerry Hutch remained silent when confronted by The Irish Mirror.
The man was yesterday quizzed on suspicion of committing an offence that carries a potential seven-year jail term - and has been released without charge. A file will now be prepared for the office of the Director of Public Prosecutions.
The Irish Mirror today approached the man - who is in his 60s - and asked several questions as he stepped out in north Dublin but he refused to comment.