David Dunne jailed for murder of Mountjoy inmate

This report is a localnews.ie summary based on public court reporting and records; sources are listed below.

David Dunne was sentenced to life imprisonment for murdering Robert O’Connor at the Central Criminal Court on 16 December 2024. The murder took place at Mountjoy Prison in Dublin on 29 July 2022.

Justice Mary Ellen Ring imposed the mandatory life sentence and ordered that it run from 1 September 2023, when Dunne went into custody in this case. She said the violence was unwarranted and that no explanation for the killing had been given.