BREAKING NEWS Multiple sick with mystery symptoms from white substance found in suspicious package at Georgia courthouse

At least four Fulton County Courthouse employees were treated for an unknown illness after intercepting a suspicious package with a white substance inside. 

A package containing the mysterious substance arrived at the Fulton County District Attorneys Office was opened on Friday, officials said. 

At least four employees have been affected by the substance, but are conscious and alert, according to Fox 5 Atlanta. 

The substance has since been deemed safe, according to WSBTV.  

The courthouse was temporarily placed on lockdown after the letter and substance were found, but that has since been lifted. 

Officials said the letter was opened around 2pm, and Atlanta Fire was immediately alerted.  

This is a developing story, please check back for updates.  

At least four Fulton County Courthouse employees have come down with something after intercepting a suspicious package with a white substance inside