Zachary Rolfe gives evidence in his defence in trial for alleged murder of Kumanjayi Walker

Zachary Rolfe arrives at the supreme court of the Northern Territory in Darwin. The police officer is on trial for allegedly murdering Kumanjayi Walker. Photograph: Aaron Bunch/AAP

In the third hour of the 18th day in constable Zachary Rolfe’s trial for murder, the Northern Territory police officer who had so far sat masked and mute in the courtroom was thrust into the fray.

“Your honour, my client does propose to give evidence in his defence and we’re in a position to start now, if that’s convenient to the court?” David Edwardson QC said on Wednesday.