Armen Keteyian, CBS News chief investigative correspondent reports about the terror attacks upon America using simultaneous attacks of poisons - targeting hotels and restaurants at many locations over a single weekend.
A key Intelligence source has confirmed the threat as "credible." Department of Homeland Security officials, along with members of the Department of Agriculture and the FDA, have briefed a small group of corporate security officers from the hotel and restaurant industries about it.
The plot discovered earlier this year is said to involve the use of two poisons - ricin and cyanide to be slipped into foods at salad bars and buffets.
The terrorists are believed to be of the same terror group that attempted to blow up cargo planes over the east coast in October.
The propaganda from the terrorists says in part, "...attacking the enemy with smaller but more frequent operations" to "add a heavy economic burden to an already faltering economy."
Manuals and videos on jihadist websites explain how to easy it is to make both poisons.
"Initially it would look very much like food poisoning," said St. John's University professor of pharmaceutical sciences Dr. Susan Ford.
She showed how little of each poison could be fatal by putting a small amount of poison in cups.
Armen Keteyian: Are these dosages enough to really harm someone or kill someone?
Susan Ford: Yes, these are 250 milligrams and that is the fatal dose.
Keteyian: So just that much sodium cyanide is enough to kill me?
Ford: Yes, it is.
Here's the video report: