The TSA has issued an all clear after the terminal at Birmingham-Shuttlesworth International airport in Birmingham, Ala. was evacuated over a threat. 

A TSA spokesman confirmed to Fox News the airport was cleared and reported employees were headed back into the airport. 

The airport's Facebook page said the terminal had been evacuated because of a threat but didn't elaborate. The airport website said several flights into the airport were being diverted.

Police spokesman Johnny Williams told the AP he didn't have any details on what prompted the evacuation. 

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The Associated Press contributed to this report