Man pleads not guilty by reason of insanity to triple family murder in Co Louth

A 32-year-old man entered a plea of not guilty by reason of insanity to murdering his brother and parents at their home in Co Louth, Ireland, last year. The plea introduces a mental-health defense, shifting the trial's focus to the defendant's state of mind at the time of the killings. The case is a domestic tragedy with legal implications for insanity pleas in Irish courts.