MOA police and security presence today?

I was entering the parking garage, and there were no less than 10 cop cars and about 30-40 officers and mall security running in the mall side entrance of the Nordstrom side of the mall.
And dozens more on that West parking garage sweeping the garage.
Needless to say we left before even parking.
Any news on what was happening? I want to take my out of town visitors there this weekend.