Idaho officials solved a 1982 cold case that may have a connection to the infamous 1982 'Tylenol murders'

Key Points:

• Idaho law enforcement identified Dr. Mathew Francis Betkouski, an organic chemist who died by cyanide poisoning in a Boise church in 1982, as potentially connected to the unsolved 1982 Tylenol poisonings that killed seven people in the Chicago area.
• Betkouski had a documented fascination with cyanide and explosives, exhibited odd behavior after a brain injury, and attempted to acquire capsules shortly before the Tylenol murders; he also made calls to chemical and pharmaceutical companies in Pennsylvania prior to the incidents.
• Although not officially named a suspect, authorities have shared their findings with Chicago investigators and are seeking new leads from anyone with information about Betkouski’s whereabouts in 1982.
• The Tylenol poisonings led to a nationwide recall of the product, widespread public fear, and significant changes in medication packaging, including the introduction of tamper-proof seals mandated by the FDA in 1989.
• The case remains open as investigators continue to explore Betkouski’s possible involvement, with forensic experts considering him a viable suspect due to his access to cyanide and behavioral profile.