The suspect was taken into custody shortly after 3 p.m.
At least one person was shot at a mall in Nashville on Thursday afternoon.
The victim was rushed to hospital and is said to be in a critical condition.
Scanner traffic suggested a chaotic scene, with police evacuating employees from stores in the mall.
A police dispatcher tells The Associated Press authorities are responding after reports of a shooting. Nashville Police said a dispute resulted in gunfire.
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I have anger and even more regret, because I do believe we could've done it and we wasted time. It's been a fantastic ride so far; now we go to Kiev , which sounds insane but it's the truth.
The mall was being swept by Metro Nashville police as a precaution.
The nearby Grand Ole Opry house and Gaylord Opryland Resort & Convention Center are on lock-down.
One tweet read, "There's an active shooting situation at the mall I'm at".
"Now, we are hiding in the storage room at Forever 21". No one is allowed in or out of the hotel.