Walden Galleria was on lockdown on Dec 26 after several fights broke out. There initially were reports of gun shots, but later were investigated to be false and instead were sounds of a sign being knocked over. Backup was called to the mall around 6:30pm and reported the conclusion of the event to have been around 8:00pm. More information here.
(photo of walden galleria: Brian Connolly/Buffalo News)