South Africa, is arrested under the Internal Security Act. July 3 – A limpet mine is found at the fuel storage yard in Alberton and defused. 21 – Six bomb explosions at sub-stations in Pretoria, Middelburg, and Ermelo disrupt power supply. 26 – Two bombs explode at 05:50 and 06:10 in central Durban. Three people are injured and extensive damage is caused to motor vehicle firms. August 6 – A bomb explodes in an East London shopping complex minutes before rush hour. 8 – A bomb explodes in a Port Elizabeth shopping centre in similar manner to the East London bomb. 11 – The Voortrekkerhoogte Military Base outside Pretoria is attacked with RPG-7s. Two British citizens, Nicolas Heath and Bonnie Lou Muller, are identified as accomplices in the assault. 19 – The railway line near East London is maliciously damaged. 23 – The South African Defence Force attacks South-West Africa People's Organisation bases in Xangongo and Ongiva, southern Angola during Operation Protea. September 2 – Two policemen and two civilians, one a child, are killed during an attack on Mabopane Police station. 12 – A bomb damages the main railway line at Delville Wood near Durban. October 10 – Umkhonto we Sizwe attacks government offices of the Department of Co-operation and Development. Four civilians are injured. 21 – Umkhonto we Sizwe destroys a transformer in Evander and a water pipeline feeding Sasol III (Secunda CTL) in Secunda. 26 – Two policemen are killed during an attack on Sibasa Police station. November 1 – The Jeppes Reef House near the Swaziland border, occupied by the South African Defence Force, comes under RPG-7 attack. 1 – The South African Defence Force attacks South-West Africa People's Organisation bases in Chitequeta, south-eastern Angola, during Operation Daisy. 9 – A bomb explodes at the Orlando Magistrates Court in Soweto. 12 – Rosslyn sub-station in Pretoria is damaged by 4 limpet mines. 27 – Cedric Mayson, a former Methodist minister, is arrested. December 4 – South Africa grants Ciskei independence. 9 – The offices of the Chief Commissioner of the Department of Co-operation and Development in Cape Town is attacked. 14 – A Pretoria sub-station is bombed. 23 – Eastern Cape provincial buildings in Duncan Village are damaged in an Umkhonto we Sizwe attack. 26 – The Wonderboompoort Police station is attacked. Unknown date Trevor Manuel becomes the General Secretary of the Cape Areas Housing Action