"Jeff Koinange, CNN's Africa correspondent, and his wife were robbed at gunpoint on Saturday outside CNN's office in the South African metropolis of Johannesburg," CNN.com says.

"Koinange said he had a gun pointed to his head while four armed young men stole everything he was carrying. But he and his wife did not suffer injuries in what he called a 'brazen' assault that occurred in broad daylight with people walking by and cars driving past."

CNN says "additional security measures have been put in place..."