Damien O'Grady has been found not guilty of unlawfully killing his father who he stabbed during a row at their home in Limerick in 2007. A jury this afternoon returned a unanimous verdict at the 26-year-old's manslaughter trial at Limerick Circuit Criminal Court. 45-year-old Stephen O'Grady was stabbed six times at the family home in Lenihan Avenue, Prospect and two wounds to his neck proved fatal. Judge Carroll Moran had told the jury it was not disputed that Damien O'Grady stabbed his father six times in the neck and thigh during a fight that had been started by his father. The judge told them they must decide if the degree of force used was unreasonably excessive. After less than an hour of deliberations the jury returned a unanimous not guilty verdict. Damien O'Grady's mother Regina, brother Evan and Sister Carla had each given evidence for the prosecution after witnessing the events at the family home on November 29th 2007 that lead to the death of Stephen O'Grady. They and other family members embraced the 26-year-old in court after he was acquitted of the charge of manslaughter.