Zindzi Mandela, the daughter of South Africa's anti-apartheid icons Nelson Mandela and Winnie Madikizela-Mandela, died on Monday, the family has confirmed. She was 59 years old.

Mandela, who was South Africa's incumbent Ambassador to Denmark, passed away at a Johannesburg hospital in the early hours of Monday morning, reports SABC, the African nation's public broadcaster.

Gathering Information on Her Death

The cause of her death was not immediately revealed. Minister of International Relations and Cooperation Naledi Pandor said her department was still gathering information regarding Zindzi Mandela's death.

"Zindzi will not only be remembered as a daughter of our struggle heroes, Tata Nelson and Mama Winnie Mandela but as a struggle heroine in her own right. She served South Africa well," the online news portal News24.com quoted Pandor as saying in a statement.

Zindzi Mandela
Zindzi Mandela Wikimedia Commons

She leaves behind four children. The news of her death was also shared on Twitter by son Bambatha. "Zindzi Mandela is no more! The true Ambassador of our National has departed! We have lost a brave champion of our nation. May her soul rest in peace," the Cape Town ETC news portal quoted the tweet as saying.

Daughter of Iconic Parents

She was Nelson Mandela's sixth child and his second with Winnie Madikizela-Mandela, and the third of his three daughters. Zindzi Mandela, born on December 23, 1960 in Soweto, stood in as the First Lady of South Africa until her father remarried in 1998.

When Nelson Mandela was offered a conditional release in 1985 by the South African President, P.W. Botha, his reply could not be delivered and Zindzi was chosen to read his refusal at a public meeting, the SABC report said. In 2014, she was appointed as the Ambassador to Denmark and arrived in the Scandinavian nation in June 2015.