A detective has been quizzed as part of a probe into gardai suspected of working for the Hutch gang.
The officer, attached to the secretive Special Detective Unit which investigates terrorism and organised crime, has been suspended from duty. The arrested detective was licensed to carry a gun.
It’s understood cash and ammunition have also been seized as part of the probe. The Garda National Bureau of Criminal Investigation has been investigating suspected links between members of the gardai and organised crime.