Zindziswa Mandela tested positive for Covid-19 at the time of her death, her son, Zondwa, has confirmed.
Speaking on Full View on the SABC on Wednesday night, the 35-year-old confirmed the news but it was not yet clear what her cause of death was as they were still awaiting the results of her post mortem.
She receiver her results on the day she died.
Zondwa also confirmed his mother would be buried on Friday morning.
He said the family has chosen to bury her on Friday and not on Saturday as the 18 July would be her father Nelson Mandela's birthday.
Zindziswa, who had been South Africa's ambassador to Denmark since 2015, died in the early hours of Monday in a Johannesburg hospital. She was 59.
The Nelson Mandela Foundation said it was left heartbroken by her death.
"Zindzi will be remembered for a rich and extraordinary life, marked by many iconic moments. The years she spent banished with Mama Winnie Madikizela-Mandela to the small town of Brandfort," foundation spokesperson Luzuko Koti said.
