The number of drug seizures in Irish prisons increased by nearly 10 per cent last year.
There was also a sharp rise in substances recovered in the state's detention centre for young offenders.
According to details released under the Freedom of Information Act, there were 1,138 drug seizures in jails across the country in 2018.
But this increased to 1,251 last year.
The highest numbers were in Dublin's prisons with 490 in Wheatfield, 237 in Mountjoy and 186 in Cloverhill.
There was also a big jump in drug seizures in Oberstown Children's Detention Campus last year, with 32. That compares with seven the previous year.
As of December 31st, there were 31 boys and two girls in the detention centre.
