Latest figures from the Irish Prison Service show that there are 128 prisoners currently at-large from the country's open prisons, including one who was sentenced for murder.
The figures, released to RTÉ News under the Freedom of Information Act, also show four others, who were imprisoned for dangerous driving causing death, are also at-large.
103 of the at-large prisoners are from Loughan House and 25 are from Shelton Abbey.
33 of those were sentenced after robbery or theft convictions, while 23 were imprisoned for motoring offences, including those for dangerous driving causing death.
Out of the 128 prisoners unlawfully at-large, 78 of them absconded from the prisons while the rest are deemed to be at-large for failing to comply with conditions of their temporary release.
The Department of Justice said Gardaí are informed when prisoners escape and they have the power to detain, arrest and return such persons to prison.
They said there is ongoing contact between the authorities on the issue.