Nelson Mandela condition 'unchanged - still serious'

South Africa's ex-President Nelson Mandela remains in a serious but stable condition in a Pretoria hospital, the latest update has announced.

The presidency said Mr Mandela's condition was unchanged and confirmed that he was in intensive care.

Prayers have been said in churches across the country for Mr Mandela, who is being treated for a lung infection.

Mr Mandela, 94, was taken to hospital early on Saturday, the third time this year he has been admitted.

BBC correspondent Gabriel Gatehouse reports from Johannesburg.