24 December 1979
The Security Police detained the president and six executive members of the recently formed Congress of South African Students (COSAS ), which had become one of the biggest anti-apartheid student organisations in South Africa.
References
Kalley, J.A.; Schoeman, E. & Andor, L.E. (eds) (1999). Southern African Political History: a chronology of key political events from independence to mid-1997, Westport: Greenwood.).