Mandela in hospital for tests 'consistent with his age' From Robyn Curnow, CNN December 8, 2012 -- Updated 1627 GMT (0027 HKT) Nelson Mandela is visited by former U.S. President Bill Clinton on the eve of Mandela's 94th birthday in July in Qunu, South Africa. Nelson Mandela is undergoing tests in a hospital in Pretoria, President Jacob Zuma says Mandela, 94, is doing well and there is no cause for alarm, Zuma says The former president is a Nobel laureate who fought against racial segregation Johannesburg, South Africa (CNN) -- South Africa's former leader Nelson Mandela has been admitted to a hospital in Pretoria for tests, but there is "no cause for alarm," President Jacob Zuma said Saturday. Mandela "is doing well," Zuma said in a statement. The medical team is assured of our support as they look after and ensure the comfort of our beloved founding president of a free and democratic South Africa. Mandela, 94, will receive medical attention "from time to time, which is consistent with his age," Zuma said. Mandela, a Nobel laureate, spent 27 years in prison for fighting against racial segregation in South Africa. He was elected president in 1994, four years after he was freed from prison.