Barbara Hogan is sentenced in the Rand Supreme Court to an effective ten years in prison for high treason and membership of the banned African National Congress (ANC). Hogan admitted her membership, but pleaded not guilty to high treason. This made her the first White woman, after those in the 1956-61 Treason Trial, to be convicted of treason.  
References

Kalley, J.A., et al (1998). Southern African Political History: A Chronology of key Political Events from Independence to Mid-1997, Greenwood: London, p. 479|South African History Online, Barbara Anne Hogan, [online], Available at www.sahistory.org.za [Accessed: 18 October 2013]