“It is with the utmost sadness that I announce the passing on of Zimbabwe’s founding father and former President, Cde Robert Mugabe,” Mnangagwa posted on Twitter early on Friday.
“His contribution to the history of our nation and continent will never be forgotten. May his soul rest in eternal peace,” he added.
After Mugabe’s fall from office in November 2017, his renowned physical stamina seemed to seep away.
The former political prisoner turned guerrilla leader swept to power in the 1980 elections after a growing rebellion and economic sanctions forced the white minority colonial government to the negotiating table.
Born on February 21, 1924, into a Catholic family at Kutama Mission northwest of Harare, Mugabe was described as a loner and a studious child, known to carry a book even while tending cattle in the bush.
After his carpenter father left the family when he was 10, the young Mugabe concentrated on his studies, qualifying as a schoolteacher at the age of 17.
An intellectual who initially embraced Marxism, he enrolled at Fort Hare University in South Africa, meeting many of Southern Africa’s future black nationalist leaders.
After teaching in Ghana, where he was influenced by founder president Kwame Nkrumah, Mugabe returned to what was then Rhodesia, where he was detained for his nationalist activities in 1964 and spent the next 10 years in prison camps or jail.
During his incarceration, he gained three degrees through correspondence, but the years in prison were wrenching.
Mugabe’s four-year-old son by his first wife, Ghanaian-born Sally Francesca Hayfron, died while he was behind bars. Rhodesian leader Ian Smith denied him leave to attend the funeral.