Former South African president Nelson Mandela has been readmitted to hospital with a renewed lung infection and is in a serious but stable condition.
A statement from President Jacob Zuma's office says the condition of the frail 94-year-old deteriorated about 1.30am on Saturday and he was transferred to a Pretoria hospital.
The presidency says he is receiving expert medical care and doctors are doing everything possible to treat him and make him comfortable.
A few days earlier, he had had a recurrence of the lung infection that has troubled him repeatedly for years.
It is Mr Mandela's second hospitalisation in two months and fourth stay in just over half a year, mostly for problems with his chest.
On 6 April he was released from hospital after being treated for pneumonia during a 10-day stay.
Mr Mandela has not been seen in public since the football World Cup final in 2010, where he appeared on the pitch before kick-off.
