** FILE ** Former police minister of South Africa's apartheid government, Adriaan Vlok, delivers his testimony to the Amnesty Committee of the Truth and Reconciliation Commission in Pretoria, South Africa, in this July 1998 file photo. Adriaan Vlok, former police chief, and three other police officials are due to appear before Pretoria's High Court, Friday Aug. 17 2007 in connection with an alleged 1989 plot to murder Chikane by lacing his clothes with poison in one of the many sinister assassination methods employed by the white racist regime which dabbled with chemical and biological warfare in its bid to retain supremacy. (AP Photo/Adil Bradlow, File)