Gardaí have launched an investigation after a detainee died at Cloverhill Prison yesterday morning.
The man was due to appear before via videolink at the nearby Cloverhill courthouse when a situation arose between him and prison officers.
The man became aggressive towards prison staff who then began to restrain him.
A short time after, the man became unwell and lost consciousness. Prison officers performed first aid on the inmate before paramedics arrived.
The man was pronounced dead a short time later.
Results of the post-mortem will establish the course of the investigation.