That is why many of us are speculating about the compound. Looks like someone studied up on accelerating whatever compound(s) utilized. Some things by themselves are relatively low in toxicity. Mix two or three in different foods, and it could be fast acting and horrific. It is a big story. Unless one believes that our people are not a target as well.
I cant think of the name of it, but there is a chemical that can be mixed with any other chemical that causes almost instant absorbtion into the body, even through the skin.