The explosion happened outside the Nedbank Square building on Church Street at about 1630 hours - the height of the city's rush hour.
PS: Four days later the South African Air Force bombed ANC bases in Maputo, Mozambique, in retaliation for the Pretoria car bomb. At least six people, including two children, were killed. Following the Maputo attack the ANC formally admitted carrying out the Pretoria bombing.
Source: BBC