Federal regulators have upgraded a product recall of Lay's Classic Potato Chips to the highest risk level for a batch that may contain undeclared milk ingredients. Last month, Frito-Lay issued a recall warning that more than 6,

The Food and Drug Administration just raised the recall level of Lay’s Classic Potato Chips to the highest risk classification. Frito Lay issued a recall on Dec. 16 through the FDA for over 6,000 bags of Lay's Classic Potato Chips that contained "undeclared milk.

The oversight could result in “death,” at least for those with a milk allergy or sensitivity, says the FDA. FDA initiated the recall on Dec. 13 and announced three days later that it was recalling the chips due to a potential or undeclared allergen. At present, no allergic reactions have been reported.