The gunman remained at large, and police asked the public for help finding the suspect in a message sent by the city’s Twitter feed.
A nursing supervisor at DCH Regional Medical Center said 17 people were being treated for injuries related to the shooting, two of them listed in critical condition.
Less than two hours after the shooting, the Tuscaloosa Police Department posted surveillance video of the suspected shooter on its Facebook and Twitter accounts.
Reuters news agency said a grainy video showed a man with a firearm walking past a row of parked cars toward the Copper Top bar. The suspect appeared to have a tattoo on his left arm.