This article may contain graphic and/or adult content unsuitable for minors and sensitive readers.
The Health Professions Council of SA hearing into the conduct of apartheid-era chemical warfare expert Wouter Basson is scheduled to continue on Tuesday.
The council ruled on Monday, that evidence presented by Basson during his criminal trial would not be used in the hearing investigating his alleged unethical behaviour.
The charges arise from Basson's involvement in the apartheid government's chemical and biological warfare programme in the 1980s and early 1990s.
He is accused of acting unethically by being involved in the large-scale production of Mandrax, cocaine and teargas, of weaponising teargas, and of supplying it to Angola's Unita leader Jonas Savimbi.
In 2002, Basson was acquitted by the High Court in Pretoria of criminal charges arising from his conduct.