The DeKalb County Public Safety Building has reopened after an unknown odor prompted officials to evacuate the building.

A hazmat unit was called to the scene in the 3600 block of Camp Circle about 9:30 a.m. after receiving a report about the odor, according to DeKalb fire.

The building houses multiple courtrooms.

At one point, officials thought the odor may have been the result of a freon leak from an air-conditioning unit, police Lt. Lonzy Robertson said.

However, DeKalb fire Capt. Eric Jackson said officials “didn’t find anything.”

Employees returned to the building about 10:45 a.m., Jackson said.

In other news:

Channel 2's Matt Johnson obtained the video that shows the student loading a gun and then saying, "South Gwinnett -- you're next."

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