A Northern Territory policeman who killed an Indigenous teenager talked about killing before the incident, his former fiancee has told an inquest.
Claudia Campagnaro told police she wasn't surprised Constable Zachary Rolfe had shot dead Kumanjayi Walker during a bungled outback arrest.
The former police officer, now a nurse, also said Const Rolfe admitted using excessive force to arrest Indigenous offenders and senior officers covered up for him.
