Former South African President Nelson Mandela was hospitalized for a second straight day Thursday for what his office described as routine tests but which drew concern over the health of the 92-year-old anti-apartheid icon.

Mandela undergoes regular hospital checkups, but his latest visit starting Wednesday stretched into an unusually long stay. Journalists camped outside the hospital Thursday as Mandela's relatives and friends entered for visits. President Jacob Zuma, attending the World Economic Forum annual meeting in Davos, Switzerland, is being updated on developments by the defense minister, whose department is responsible for current and former