A post mortem examination is due to take place
A prisoner in his 20s has been found dead at Castlerea Prison in County Roscommon.
The Irish Prison Service says the next of kin has been notified.
Gardaí are investigating 'all of the circumstances' surrounding the man's death.
A post mortem examination is due to take place, and the results will determine the course of the investigation.
More to follow...