Cop killerâs explosive final phone call to police LISTEN: It was a 30-minute expletive-riddled phone call that led police to their most wanted man. In a matter of hours it turned deadly. Crime by Kate Kyriacou, Thomas Chamberlin 23rd Apr 2021 5:28 PM Premium Content Subscriber only It was the phone call that led Toowoomba police to their most wanted man - and tragically saw the murder of one of their own. At 1pm on May 29, 2017, paranoid gunman Ricky Maddison - wanted over allegations of torture and deprivation of liberty and accused of firing a gun during a domestic violence incident - made a call to his local police station.