In a statement released on Thursday afternoon, the Mandela family announced that the family’s matriarch and former wife to late former president Nelson Mandela has been admitted to hospital.
The cause of the 80-year-old’s admission was not specified, but it is unexpected and she is being observed.
She spent the night in Milpark Hospital in Johannesburg.
They said: “The Mandela family wish to inform the public that Winnie Madikizela-Mandela has been admitted to the Milpark Hospital for observation.
“Mrs Mandela went to the hospital for a routine medical check-up on Wednesday. A decision was taken to admit her for further observation.”
The family said they would announce any developments when they occur.