Nelson Mandela 'recovering from a collapsed lung'

Nelson Mandela is understood to be recovering from a collapsed lung, despite claims from his office that he was in hospital for "routine tests".

The former South African president undergoes regular hospital check-ups, but his latest visit, which began on Wednesday, drew concern over the health of the 92-year-old anti-apartheid leader.

But sources claimed that despite having suffered from a collapsed lung, Mr Mandela could be released from hospital in Johannesburg today.

President Jacob Zuma, attending the World Economic Forum annual meeting in Davos, Switzerland, is being updated on developments.

Children at a school next door to Milpark Hospital made cards and posters wishing Mandela well and put them up in the school grounds.