2010-12-20 20:33:00 PST Roseville, CA 95661, United States — (12-20) 20:33 PST Roseville, Calif. (AP) --
Fire officials say the Roseville Galleria mall was evacuated after nearly 5,000 holiday revelers showed up for a "flash mob" organized by a local choral society.
Roseville Fire Inspector Tom Dodaro tells KXTV that the spontaneous holiday musical performance drew a huge crowd.
Officials say there were reports of the floor and foundation moving and creaking near the food court, which spurred the evacuation.