Residents near Atlanta were asked again to shelter in place if a chemical cloud moved over their neighborhood as plumes from a chemical plant fire continued to shift overnight.

"If you have concerns, stay inside, close windows and doors, and turn off ventilation systems,” Atlanta's mayor advised

More than 90,000 residents in a county east of Atlanta were told to keep sheltering in place Monday and businesses were told to stay closed a day after a chemical plant fire sent a massive plume of dark smoke high into the sky that could been seen for miles.