Pretoria - Presidential spokesman Mac Maharaj has declined to comment on a report that Nelson Mandela had undergone a “surgical procedure”, the international news agency AFP reported.
The former statesman underwent a “surgical procedure to unblock a dialysis tube” on Friday, according to US news network CBS.
The operation was “minor”, the network reported.
Maharaj would not confirm that the procedure took place.
“He is critical, stable, but there is some improvement,” Maharaj told AFP on Sunday.
On Monday, a small number of people braved the cold to visit the Mediclinic Heart Hospital in Pretoria where Mandela was spending his 52nd day in hospital.
Members of the public took pictures of a hospital wall covered with messages and flowers for the anti-apartheid icon. - Sapa