The former GSOC investigator who quit after attending a party with Gerry Hutch is being quizzed on suspicion of committing an offence that carries a seven-year jail term, it has emerged.
The Irish Mirror has established that the disgraced ex-staff member at the independent policing watchdog was arrested on suspicion of illegally leaking information.
Sources have confirmed he is being quizzed on suspicion of breaching the Garda Siochana Act of 2005.