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.

Two Iranian navy warships arrived Saturday morning in Port Sudan, in the second such visit to Sudan within two months, eyewitnesses and officials said.

Ghana extended voting into a second day Saturday in areas where election materials arrived late or glitches with a new biometric system caused delays.