Pepper spray attack

Okay, this story of a pepper spray attack in Times Square is one of those things that make me worry. Hopefully, it was just a prank. On the other hand, it might have a test which will be followed by a more dangerous chemical or biological attack. Then of course, there's the really grim possibility that is was a biological attack, the pepper spray being used as camouflage. The story mentions that "fire officials" "searched the store with equipment to detect toxic material." Did someone take a sample of this stuff to a lab to look for known dangerous pathogens? At this point, I may as well be fatalist about it: those shoppers will either get sick or they won't. So far I haven't heard any news that they have, so I won't be moving to a little survival place in Wyoming just yet. (Yes, that's a movie reference.)