Murder accused told doctors that release of abuser Michael Ferry caused him to 'spiral'

A 39-year-old man from Carrickcoyle in County Donegal's Gaeltacht has been found not guilty of murder by reason of insanity following a jury verdict at the Central Criminal Court in March 2026. Derek Mulligan was charged with the fatal assault of his grandfather, Derek Burns, aged 78, at their family home on 19 December 2023. The incident involved the use of a granite stone and cement block. Medical evidence…