Nelson Mandela, the former South African president and antiapartheid leader, remains in hospital a day after being admitted for tests.
The 94-year-old Mandela was brought to a military hospital in Pretoria on December 8 for unspecified reasons.
President Jacob Zuma, who visited Mandela on December 9, issued a statement saying the antiapartheid icon was "comfortable and in good care."
The president's office has also said there is "no cause for alarm" and that Mandela requires occasional medical attention that is standard for his age.
Mandela spent 27 years in prison for opposing South Africa's policy of white rule and went on to receive the Nobel Peace Prize and serve as South Africa's first black president.
Mandela has been hospitalized twice in recent years for abdominal and respiratory problems.
Based on reporting by AP and BBC