A teenager showed no signs of radicalisation before carrying out a religiously motivated killing outside police headquarters, a coroner has found.
NSW Police civilian employee Curtis Cheng was gunned down in October 2015 while leaving work by 15-year-old Farhad Khalil Mohammad Jabar in an act of religious extremism.
Farhad was then killed by a special constable after he fired more shots at the police headquarters.
