More than 30 homes in 12 counties across the country have been searched by gardaí as part of an ongoing investigation into online child abuse material.
The raids took place over the past five days.
One man suspected of selling items related to child sexual abuse was arrested and questioned and a file is being prepared for the Director of Public Prosecutions.
This is the third series of searches carried out under Operation Ketch, set up to target those involved in possessing, distributing and importing online child abuse material.
Digital material, computers and mobile phones have been seized.
More than 100 people have been targeted since Operation Ketch was established, with 38 premises searched in February and 35 searched in July.
Detective Chief Superintendent Declan Daly, who heads the Garda National Protective Services Bureau, said gardaí will "relentlessly" pursue anyone involved in the possession, importation and distribution of child abuse material.
Gardaí also say they are liaising with Child and Family Agency Tusla regarding any child protection issues that may arise.
