KNOWLEDGE OF THE EXISTENCE OF DISCRETIONARY POWERS IS AN IMPLIED PRECONDITION TO THE PROPER EXERCISE OF A DISCRETION TO ARREST WITHOUT A WARRANT Motabatshindi V Minister of Police (South Gauteng High Court, Johannesburg (unreported) 2014-09-26 Case No A3. Obiter 2016, 37 (1). https://doi.org/10.17159/obiter.v37i1.11570.