<P> The Chicago Tylenol murders were a series of poisoning deaths resulting from drug tampering in the Chicago metropolitan area in 1982 . The victims had all taken Tylenol - branded acetaminophen capsules that had been laced with potassium cyanide . A total of seven people died in the original poisonings , with several more deaths in subsequent copycat crimes . </P>
where did this case of product tampering occur
the Chicago metropolitan area