County Louth: Robert O'Connor found guilty of manslaughter for killing 3 family members

A 32-year-old man who killed his parents and younger brother has been found not guilty of their murders but guilty of manslaughter by diminished responsibility.

County Louth: Robert O'Connor found guilty of manslaughter for killing 3 family members

TL;DR

  • Robert O'Connor was found guilty of manslaughter by diminished responsibility for killing his parents and younger brother.
  • The jury accepted psychiatric evidence that O'Connor was experiencing a schizophrenia relapse during the September 2025 killings.
  • O'Connor's defense argued for a verdict of not guilty by reason of insanity, seeking proper mental health treatment.
  • Two psychiatrists provided differing opinions on whether O'Connor met the criteria for insanity.
  • The prosecution's psychiatrist noted O'Connor's remorse and understanding of his situation.
  • O'Connor was not taking his schizophrenia medication and had used cocaine prior to the incident.
  • The jury reached unanimous verdicts after deliberating for over four hours.
  • A sentencing hearing is scheduled for December 14.