Luigi Costa , 71 , is accused of killing his neighbour Terrence Freebody . The two men were neighbours in a house on the same street and had been arguing over money when Mr Freebody, who was homeless, came home to find them fighting. Experts says Costa suffered from dementia and alcohol abuse at the time . He also said there were signs of Costa 's decline in the lead-up to incident .
Luigi Costa , 71 , is accused of killing his neighbour Terrence Freebody . Costa allegedly stomped on his head , cut his throat and stabbed him multiple times in Freebody 's dining room in Red Hill , Canberra on July 2012 . Experts says Costa suffered from dementia and alcohol abuse at the time . He also said there were signs of Costa 's decline in the lead-up to incident .