41 of the 90 patients in the centre in 2020 had been charged with murder
Two people were discharged from the Central Mental Hospital last year after spending an average of 10 years in detention.
41 of the 90 patients in the centre in 2020 had been charged with murder.
About four out of every five people were sent there after being found not guilty of a crime, by reason of insanity.
Consultant psychiatrist, Punchestown resident, Patricia Casey, from the Hermitage Medical Clinic in Dublin, says long periods of detention are often needed.
She says long periods of care are often needed.

Sharp Rise In M9 Collisions With Garda Call-Outs Up Year-On-Year
Councillor Seeks Clarity On How Often Nightclubs and Late Bars In Naas Are Inspected For Fire Risks
New Figures From CSO Reveal How Much International Protection Applicants Earn Compared To Average Worker In Ireland
Unpaid Eight-Month Work And Training Placement For Adults With Disabilities Branded "Extremely Unfair"
Department Of Education Defends Kildare SNA Cuts Amid Claims Of Reduced Need At Some Schools
Naas Nurses Threaten Escalation As Staffing Row Deepens
Driving Tests Face Disruption As RSA Testers To Strike Next Week
Jury Delivers Not Guilty By Reason Of Insanity Verdict In Ballyfin Demesne Strangling Case