Africa and the world at large are mourning the death of a great South African anti-apartheid activist, Winnie Mandela.

Nigeria's president, Muhammadu Buhari has joined others leaders to pay tribute to the renowned freedom fighter.

Winnie Mandela died on Monday in Johannesburg, aged 81.

A spokesperson to the president, Garba Shehu, said Winnie’s departure is a huge loss to the continent of Africa.

“President Muhammadu Buhari has described the passing away of South-African anti-apartheid icon, Mrs Winnie Madikizela-Mandela, as a huge loss to Africa of a courageous woman.

Also read: JUST IN: Winnie Mandela Dies At 81

“The President noted that she was a woman of uncommon determination, steadfastness and perseverance who held aloft the torch of the struggle against institutionalised discrimination even while her ex-husband, the late Madiba, President Nelson Mandela was incarcerated.

“President Buhari, on behalf of the government and people of the Federal Republic of Nigeria, commiserated with the family of the deceased, the government and people of South Africa, urging them to be consoled by the knowledge that the late Winnie Mandela’s contributions to ending apartheid will not be forgotten.”

Winnie had reportedly been very ill for years and was recently admitted to a hospital with a kidney infection.

She died in Johannesburg's Milpark Hospital surrounded by family members.

ALSO WATCH: Another Set of Winners in The Bounce Awoof