JOHANNESBURG (WUSA) - South African president's office says Nelson Mandela has been admitted to a hospital for tests.

The president's officesaid the tests were part of a routine check upand that there was no reason foralarm.

President Mandela, 94, was hospitalized for a lung infection in December and also underwent gallstone surgery.He has been receiving treatment at his home outside Johannesburg.

President Mandela has not appeared in public since 2010.

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