Authorities closed off part of Peachtree Street in downtown Atlanta after an underground explosion sent several manhole covers flying on Monday.
Atlanta Police Officer John Chafee said that it appears that a short in an underground electrical vault caused the explosion. That blast was so powerful that it sent at least five manhole covers as high as 7 feet in the air.
"I came out and heard a real big boom, and people started running out of the stores and running around and everything, trying to figure out what the noise was," said witness Jimmy Coleman.
There were no injuries, Chafee said.
Most of the roads in downtown were blocked off after the explosion as a precaution. Officials reopened most of them by late Monday. Several downtown buildings remained without power.
Georgia Power and Atlanta Gas Light crews were on the scene investigating along with Atlanta police and fire crews.