Final answer:
The 1982 Tylenol murders occurred in the Chicago area. It is involving cyanide-laced capsules that led to seven deaths and substantial changes in pharmaceutical packaging safety.
Step-by-step explanation:
The 1982 Tylenol murders took place in the Chicago metropolitan area. In this tragic event, seven individuals died after taking Extra-Strength Tylenol capsules that had been laced with lethal doses of potassium cyanide. Between September 29 and October 1, 1982, these victims inadvertently consumed the contaminated capsules, leading to a nationwide panic and a massive recall of Tylenol products. As a reaction to this event, packaging safety standards in the pharmaceutical industry were revolutionized, resulting in the introduction of tamper-resistant packaging to prevent product tampering. Despite an extensive investigation by the FBI and local law enforcement, the person or persons responsible for the poisonings were never apprehended, making this case an enduring mystery in the annals of American crime.