There are 550 more people in the country's 14 jails now than a year ago
The Prison Officers Association is raising concerns about overcrowding in the country's jails.
Around 50 inmates have been sleeping on mattresses on the floor this week, according to the organisation.
There are 550 more people in the country's 14 jails now than a year ago.
This time last year the figure was 3,767 - but it now stands at 4,317, while the current total is 94 beds short of capacity.
However, both the female and male jails in Dublin's Mountjoy and Limerick prisons have exceeded their capacity.
The Irish Prison Service says it must accept all inmates committed by the court - and can't refuse any.
It says jails are particularly high when courts are at their busiest.
Karl Dalton, the general secretary of the Prison Officers Association, says overcrowding increases the risk of violence:

Local TD Accepts Data Centres Are A "Particular Issue" In Ireland
Katie Taylor Tickets Sell Out for Croke Park Final Fight In September
New Digital Wallet Might Be Needed To Access Pornography Online
Two Men Arrested As Gardaí Seize Firearm And Drugs In Blanchardstown
Trial Of Man Accused Of Attempted Murder Of Three Children Will Be Shown CCTV Today
Second Night Of Riots In Belfast
Victim Loses Eye After Attempted Murder In Belfast On Monday
Report Finds Over 95,000 Children Are In Poverty