full_name: J Van Wyk
firstname: J
description: A prison warder who was seriously injured when a member of an ANC self-defence unit (SDU) detonated a hand grenade while trying to escape from Leeuwhof prison, Vereeniging, Transvaal, on 18 December 1993. Three people died and nine were injured. One SDU member was granted amnesty for the incident (AC/2000/145). See self-defence units (SDU).