In one of the schemes that was identified, Joe de Deker, a former stockholder in De Beers, worked with the government of Zaire to supply military equipment to UNITA from 1993 to 1997.[5] De Deker's brother, Ronnie, was an arms dealer who allegedly travelled with him from South Africa to Angola, directing weapons originating in Eastern Europe. In return, UNITA gave Ronnie bushels of diamonds worth US$6 million. De Deker sent the diamonds to De Beer's buying office in Antwerp, Belgium.