The Dothan Bomb Squad evacuated the government building and closed two blocks around the complex while they investigated a "suspicious device" left in the parking lot.
Evacuations included at least four homes and businesses surrounding the city hall.
The squad neutralized the device and used a robotic machine to load it into a vehicle. It will be transported to Dothan for use in an investigation.
Authorities say the scene around city hall will be clear and back to normal by approximately 10:00pm.
As for the suspect, charges are pending but the Bureau of Alcohol, Tobacco and Firearms will have to determine the exact charges.