The mall was shut down at 11:20 p.m. despite its original set closing time of midnight, according to the AL.com report.
No arrests were made, but Hoover police say that an undetermined amount of people were detained pending warrants. A 19-year-old suffered a gunshot wound while in a vehicle in the parking lot and reportedly faced life-threatening injuries.
Hoover police and firefighters responded to the shopping center after 11 p.m. on at least one fight in a store on the mall's second floor.
Hoover police officers separated two girls who were fighting and treated them for minor injuries, according to a statement.
There were reports of several arrests stemming from the fights, but efforts to confirm that with police weren't immediately successful.
Police said two men were sitting inside a vehicle when one of them discharged the gun while trying to holster the weapon. No major incidents were reported at the Galleria or any of the city's other shopping facilities. That reportedly sparked a second fight.
A video posted to Twitter shows security guards or police handcuffing shoppers as a merchandise table was flipped and punches were thrown near the store.
Black Friday 2017 was only a few hours old before the first brawl videos started to hit the internet, with footage showing scraps between determined shoppers vying for all the best deals.