The president of the Human Rights council Ambassador  Václav Bálek (Czechia), has appointed Carlos Castresana of Spain as a member of Commission on Human Rights in South Sudan.  The move came after the resignation of Andrew Clapham who had led the commission since its establishment in 2016 by the UN Human Rights Council. 

Castresana has held higher positions as a practicing Attorney and magistrate for more than 30 years and has successfully headed numerous notorious investigations and prosecutions on corruption, organised crimes, terrorism and international crimes. He has also previously held positions in the UN including as Commissioner of the International Commission Against Impunity in Guatemala with the rank of UN Assistant-Secretary-General from 2007 to 2010. He also worked as a consultant and senior expert for various UN entities which includes UNDPA, UNDP, UN Women, and UNODC.  

The Commission of Human Rights in South Sudan was intended to examine, monitor and publicly report on human rights situations  in South Sudan  in the wake of armed conflicts that first erupted in the country in 2013.