A chemical plant fire that ignited Sunday has left more than 90,000 residents of a Georgia county sheltering in place. The big picture: Air quality surveys detected chlorine, a harmful irritant, in the air emitting from the Conyers,

Emergency evacuations took place in Georgia following a chemical plant fire outside Atlanta that spewed potentially toxic smoke into the air.

A small fire on the plant’s roof was initially contained but reignited Sunday afternoon, authorities said. More than 90,000 residents east of Atlanta were told to keep sheltering in place Monday a day after a chemical plant fire sent a massive plume of dark smoke high into the sky that could been seen for miles.