New figures show nearly seven in ten prisoners currently in custody had previously been committed to an institution.
The Irish Prison system isn't working, according to Aontú.
Figures released to the party show there are 60 more prisoners in custody than there are beds available at institutions around the country.
Its Leader, and Meath West TD Peadar Toibín, says "until we provide supports to citizens with addiction to drugs and citizens with poor mental health services we are just going to keep filling our prisons."
He also says there needs to be "wrap around counselling supports, addiction treatment, rehabilitation plans and also properly funded chaplaincy services."
The Party is also calling for the introduction of more prison beds.
The figures show of the 4,581 prisoners in custody, 3,197 had been previously been committed to an institution.
That equates to just under seven in ten prisoners.
Deputy Toibín says "It is clear our prison system is not working and is literally recycling hundreds of people through the prison system again and again."
Calls Grow For 24 Hour Garda Station In Edenderry After Arson Attack
Appeal Date Set For Jozef Puska Over Murder Of Ashling Murphy
Offaly Town Demands Meeting With Garda Commissioner And Justice Minister
Ireland’s First Kidney Pancreas Transplant Recipient Dies Aged 68
Quality Of Life To Drive Offaly’s Appeal For Foreign Investment - Anna Marie Delaney
Hundreds Of Mourners Gather For Tadgh Farrell's Funeral
Dancing With The Stars ‘A Once In A Lifetime Opportunity’ - Rose Of Tralee
Uisce Éireann To Submit €6b Water Project Plan
Pedestrian Killed In Midlands Crash
Gardai Arrest Four Men Over Laois Prison Assault
Maura Higgins Set For Traitors US
Man Taken To Hospital Following Alleged Westmeath Assault
Osteoarthritis Programme Launched At Midlands Hospital
Laois County Fire And Rescue Service Welcomes Two New Fire Appliances
Offaly TD Welcomes New IDA Ireland Investment
Gardai Conduct House Searches In Connection With Offaly Arson Attack
Funeral For Offaly Arson Attack Victim To Be Held Today
Emergency Services At Scene Of Offaly Crash
Tadgh Farrell’s Father Denied Compassionate Bail To Attend Son’s Funeral