A class-action lawsuit has been filed against a Georgia lab and its parent company after a fire at the facility created a chemical plume. Here's what it alleges.

The fire, extinguished Sunday, caused a chemical reaction when the sprinkler system activated, mixing hazardous material on site and releasing it into the air.

National personal injury law firm, Morgan & Morgan has filed a class-action lawsuit against BioLab Inc. and KIK Consumer Products after a fire at BioLab's Conyers plant resulted in a plume of chemicals wafting from the site across metro Atlanta.

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.

Authorities on Monday night ended a shelter-in-place order for more than 90,000 people east of Atlanta following a weekend chemical plant fire that sent a massive plume of dark smoke into the Georgia sky and led to complaints about a strong chemical smell and haze.