Police maintain a strong presence in the suburb where the pre-dawn shooting of Sergeant Chris Mulhall, Constable Sharnelle Cole and Constable Daryl Elliott Green took place the day before. The home of the gunman, Nigel Parodi, is cordoned off by police as investigators and forensic officers search for evidence. Learn about the gunman’s background, the status of the wounded officers, and listen to police theories and strategies at the early stages of the investigation into the horrific crime.