Police in South Fulton responded Thursday morning to a reported bomb threat at a USPS mail recovery center after an employee spotted a suspicious device and contacted authorities.

The building at 125 Villanova Drive was evacuated, and nearby roads were closed as a precaution while officers secured the area. The Atlanta Police Department Bomb Squad responded and safely extracted the item, which officials say was determined to be a military ordinance. 

While authorities had said that the device was explosive, investigators say they learned it had no explosive materials after detonating it at a disposal facility.

"All safety protocols were followed to ensure the protection of employees, first responders, and surrounding businesses," the South Fulton Police Department told CBS News Atlanta.

This marks the city's third reported bomb threat in less than a month. On Sept. 23, police responded to a bomb threat at a Kroger grocery store on Cascade Road. The following evening, the same USPS facility was evacuated after another reported threat. In both previous incidents, authorities determined there was no credible danger.

Police said Thursday's investigation remains ongoing, and additional updates will be provided as more information becomes available.