The Northern Territory Coroner will look into the "past conduct" of Constable Zachary Rolfe and police responses to excessive force complaints in an inquest into the death of 19-year-old Kumanjayi Walker, a court has heard. Key points: Kumanjayi Walker was fatally shot during an attempted arrest in 2019 Constable Zachary Rolfe was acquitted of murder after a five-week trial A …