South Africa's governing African National Congress (ANC) says its leader, Cyril Rampahosa, will be sworn in as president on Friday, if the chief justice is available.

Later in the day, he will deliver the state of the nation address which President Jacob Zuma was forced to postpone earlier this month, it said in a statement.

The party has also said that if Mr Zuma fails to resign today, parliament will pass a no-confidence vote in him on Thursday.