http://www.legislation.gov.uk/nisi/2008/1216/article/89/2012-01-01The Criminal Justice (Northern Ireland) Order 2008texttext/xmlenStatute Law DatabaseNORTHERN IRELAND2024-01-312012-01-01 Part 2 of this Order makes provision about sentencing, including provision for extended and indeterminate custodial sentences for certain offences and for the release on licence of persons serving custodial sentences. PART 5 MISCELLANEOUS AND SUPPLEMENTARY<Emphasis><Acronym Expansion="Police and Criminal Evidence Act">PACE</Acronym></Emphasis>Police officers performing duties of higher rank89For Article 84 of the Police and Criminal Evidence (Northern Ireland) Order 1989 (NI 12) substitute—Police officers performing duties of higher rank841For the purpose of any provision of this Order or any other statutory provision under which a power in respect of the investigation of offences or the treatment of persons in police custody is exercisable only by or with the authority of a police officer of at least the rank of superintendent, an officer of the rank of chief inspector shall be treated as holding the rank of superintendent if—ahe has been authorised by an officer holding a rank above the rank of superintendent to exercise the power or, as the case may be, to give his authority for its exercise; orbhe is acting during the absence of an officer holding the rank of superintendent who has authorised him, for the duration of that absence, to exercise the power or, as the case may be, to give his authority for its exercise.2For the purpose of any provision of this Order or any other statutory provision under which such a power is exercisable only by or with the authority of an officer of at least the rank of inspector, an officer of the rank of sergeant shall be treated as holding the rank of inspector if he has been authorised by an officer of at least the rank of superintendent to exercise the power or, as the case may be, to give his authority for its exercise..