The separation unit in Dublin's Mountjoy Prison has been closed following a scathing report which uncovered deficiencies, bad practice and overcrowding.
Justice Minister Frances Fitzgerald said the decision was taken to relocate all inmates from the facility, which was used to house prisoners under protection or at risk.
She said the Irish Prison Service put a plan in place for the closure of the unit on a phased basis "in light of the serious issues raised" by the inspector of prisons.
“The number of prisoners accommodated there reduced initially from 60 to 40 and then reduced to twelve at the end of August,” she said.
“I can confirm that the remaining prisoners were removed from the Separation Unit on Friday.”
In his report Judge Michael Reilly uncovered deficiencies, bad practice, overcrowding, lack of regimes and services in the unit which was used to house prisoners under protection or at risk.
He said the unit bore no relation to the main prison building and appeared to have been forgotten.