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Nelson Mandela spends fourth day in hospital

11 June 2013 Last updated at 07:20 BST

South African ex-President Nelson Mandela is spending a fourth day in a Pretoria hospital where he is being treated for a recurrent lung infection.

The office of President Jacob Zuma says the 94 year old remains in a serious but stable condition.

Relatives, including his ex-wife Winnie Madikizela-Mandela, visited the ailing former leader on Monday.

Gabriel Gatehouse reports from Johannesburg.