Some 49 inquests still haven't been completed.
Some 100 prisoners have died in Irish jails over the past ten and a half years.
While 15 have been confirmed as suicides, while the cause of death hasn't been determined in almost half of the cases.
Last month a man accused of murdering his wife and two children in Dublin in 2020 was found dead in Midlands Prison.
Sameer Syed was due to stand trial the following week in connection with the three deaths in Rathfarnham, It's believed he took his own life.
New figures, released under the Freedom of Information Act, show a total of 100 prisoners have died in Irish jails since 2012.
Of the 100 prisoner deaths in custody since 2012, 49 of the inquests still haven't been completed.
Of those that have, almost a third have been confirmed as suicides.
The Irish Prison Service says all deaths in custody are investigated, including by the Inspector of Prisons and the gardai, where circumstances warrant.
Breaking: Nikita Hand Has Won Her Case Against Straffan Resident Conor McGregor
Barrister Faces Possible Jail Sentence For Reoccupying Home She Was Evicted From In Naas
Jury Begins Deliberations In Conor McGregor Civil Case
Animal Charity Appeals For Help In Locating A Distinctive Spotted Pony Missing From Ticknevin
Storm Bert Expected To Dominate The Weekend
Kildare Among Worst Hit Areas As 1,366 Children Await Critical Assessment Of Needs For Over Six Months
14 People Identified After Dublin Riot Images Published
Met Eireann Issues 4 Weather Alerts, With Kildare And Surrounding Counties On Yellow Alert For Ice And Snow
