Nelson Mandela, the former South African president and anti-apartheid leader, was admitted to a hospital yesterday (9th).

Presidential spokesman Mac Maharaj said Mandela went on Saturday afternoon for tests “to manage existing conditions in line with his age” at a hospital in Pretoria, the capital.

“Doctors are conducting tests and have thus far indicated that there is no reason for any alarm,” Maharaj said in a statement.He appealed for the public to respect the privacy of Mandela and his family.

Mandela was hospitalized for nearly three weeks in December before going home on Dec. 26. At that time, he was treated for a lung infection and had a surgical procedure to remove gallstones. The ex-president has become increasingly frail.