CRIMINAL CODE
PART I - General Provisions
TITLE VI - Justifiable Force and Harm
36.- (7) Where a person is alleged to have killed another person and the accused person claims that he did so for the prevention of or for the defence of himself or of any other person against any of the crimes specified in subsection (4) of this section, no charge shall be laid or prosecution commenced against such person for the offence of murder except with the leave of the Director of Public Prosecutions given in writing.
Self-defence - national proceedings
EDIT.