“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, vol. 37, no. 1, Apr. 2016, doi: 10.17159/obiter.v37i1.11570.