A father probably killed his son with a steak knife, uttered Allah's name and dropped the three-year-old down a disused mine shaft, the South Australian Supreme Court has been told Prosecutors in the case involving Aliya Zilic said that he had taken the boy, Imran, 3½, from his mother's Perth home a few days earlier. Mr Zilic is on trial accused of murdering his only son during an access visit in April 2008. He has pleaded not guilty by reason of mental incompetence. Horrific details of the youngster's final moments emerged in the court, with prosecutor Jim Pearce saying it...