CNN.com fills in the details:

"The CNN.com newsroom, near the Omni, was temporarily evacuated. Some workers had already scrambled out of the building seeking cover after hearing shots."

More: "CNN.com writer Brad Lendon said he heard a loud bang, and then saw a woman on the ground next to a potted plant near a back entrance to the CNN.com newsroom. A man stood over her 'and fired at least two shots into her,' he said. After the shots, Lendon said, the gunman 'looked around, his head turning in my direction. I don't know if he saw me, but at that moment the gravity of what I'd witnessed hit me. I turned away and tried to find the safest way I could out of the CNN.com newsroom.'