CNN reported that Zindzi Mandela, the youngest daughter of anti-apartheid activists Nelson Mandela and Winnie Mandela, has died. She was 59 years old. 

The South African Department of International Relations and Cooperation confirmed her passing but has yet to release her cause of death. The department is still awaiting the information and expects to release a statement at a later time.

Zindzi passed early Monday morning at a Johannesburg hospital, according to a statement from the office of South African President Cyril Ramaphosa.