Bheki Zacharia Mvulane, an 18 year old political activist was arrested with eight others in February 1985. When he failed to appear in court along with the others on 7 March, his family grew concerned. They later found him unconscious in hospital. On 29 March, he died from head injuries. It is not clear how Mvulane died. A man that was detained with him later recounted how Mvulane had been beaten and trampled on by the police until he lost consciousness. He was just one of the many detainees who mysteriously lost their lives behind bars.
References

Sheppard, N. Junior, (1985), Detainees` Families Tell Tales of Terror, from Chicago Tribune News, 5 August [online], Available at articles.chicagotribune.com [Accessed: 10 March 2014] |SAHO, Bheki Mvulane, from South African History Online [online], Available at www.sahistory.org.za [Accessed: 10 March 2014]