Witness describes terrifying office shooting

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By Mike Gertzman By Mike Gertzman

PHOENIX -- An office building in Phoenix was full of people when someone started firing a gun in the lobby Wednesday morning.

"We heard loud noises. I didn't know it was gunshots at the time," said Karen Greenhow, who works in the building. "Then we had someone come into our office and say there was a gunman with two handguns and that there had been a shooting," explained Greenhow.

Greenhow's office is on the second floor of the building.

Watch the video above to hear the witness account of the shooting