Hanekom was arrested on numerous charges relating to terrorism after he was initially reported kidnapped in Mozambique last year.
His wife Francis has been campaigning for his release and pleading his innocence. The 62-year old Hanekom lived in Mbombela in Mpumalanga and owned a maritime logistics company in Mozambique.
SABC spoke to his daughter and the Department of International Relations and Cooperation.
On Friday, my dad was not eating. He was admitted to a hospital we not exactly sure what happened. We don’t have proof of what happened but he was admitted to ICU, he was really sick and they removed a lot of blood from his stomach. There was blood in his urine and he was vomiting. He was really sick that Saturday,” says Hanekom’s daughter, Amanda.
Foreign Affairs spokesperson Ndivhuwo Mabaya says, “The minister has directed the high commission to engage with the authorities to investigate the cause of death and also to find any other information. So we are also busy gathering information and getting to understand what happened from last week.”