People in multiple counties are reporting a chlorine smell and smoke spreading after a chemical plant fire in Rockdale County.Newton County Schools have canceled classes for a second day in a row. A fire broke out Sunday morning at the Biolab facility on Old Covington Highway.

Thousands of people were told to stay home with their windows shut Monday after a fire at a Georgia industrial plant caused a chemical reaction that prompted around 17,000 people to evacuate Sunday and left potentially harmful chlorine lingering in the air.

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

For everyone sheltering in place, the best practice is to turn the air conditioning off and keep windows and doors shut,” a statement said.

More than 90,000 residents in a county east of Atlanta have been told to keep sheltering in place a day after a chemical plant fire sent a massive plume of dark smoke high into the sky that could been

According to Rockdale County officials, a fire at a Georgia chemical plant is forcing evacuations and interstate road closures in Conyers, Georgia, about 30 miles east of Atlanta. CNN’s Jessica Dean has more.

A shelter-in-place advisory is extended in Rockdale County, Georgia, after a fire and chemical release erupted at a BioLab plant east of Atlanta. Thousands of residents in the city of Conyers were evacuated and the presence of chlorine has been confirmed by the EPA.

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,