What (a) is the current status of the investigation into CAS 199/06/2016 opened at the Khayelitsha Police Station, (b) are the offences contained in the docket, (c) is the (i) rank and (ii) name of the investigating officer and (d) are the full details of all feedback given to the family in terms of the (aa) content of, (bb) dates on which and (cc) the means through which the feedback was given?