A spokesman for the South African Presidency has said that earlier media reports that former president Nelson Mandela has been discharged from hospital were "incorrect".
Mac Maharaj said: "Madiba is still in hospital in Pretoria, and remains in a critical but stable condition.
"At times his condition becomes unstable, but he responds to medical interventions."
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Several Britons are dead after a serious crash in Al Khalas, a settlement roughly 30 miles north of the holy site of Mecca.
So-called Islamic State said they were behind the attack that targeted people receiving their national identification cards.