Idaho detectives link 1982 church death to Tylenol murders

Idaho detectives link 1982 church death to Tylenol murders

Security Society

On 25 September, Ada County detectives said the man whose body was found in 1982 at Sacred Heart Catholic Church in Boise, identified as Dr. Mathew Francis Betkouski, may have been involved in the cyanide-tainted Tylenol murders in the Chicago area. The identification was announced on 23 September, when investigators said the previously unknown victim was the organic chemist Betkouski, whose personal items included references to cyanide and a map of Chicago, and they forwarded the evidence to Chicago authorities for review.

Actors

Ada County detectives Dr. Mathew Francis Betkouski Ada County Sheriff Matt Clifford Chicago authorities NASA White Sands Test Facility

Locations

Boise, Idaho, United States Sacred Heart Catholic Church, Boise, Idaho, United States Ada County, Idaho, United States Las Cruces, New Mexico, United States White Sands Test Facility, New Mexico, United States Pennsylvania, United States Chicago, Illinois, United States Jacksonville, Florida, United States Eagle, Idaho, United States

Articles

September 25, 2026
1 total
Idaho cold case linked to 1982 Tylenol murders, officials say
Idaho cold case linked to 1982 Tylenol murders, officials say

theguardian.com • 25 Sep 19:38

Detectives say a man whose body was found in an Idaho church in the 1980s may have been involved in the 1982 cyanide-tainted Tylenol killings in the Chicago area.

Credibility 71% Manip. 9% Center
September 24, 2026
1 total
Idaho man who died of cyanide in 1982 identified as Dr. Mathew Betkouski, possible link to Tylenol murders
Idaho man who died of cyanide in 1982 identified as Dr. Mathew Betkouski, possible link to Tylenol murders

Fox News • 24 Sep 00:08

Investigators have identified the previously unknown man who died of cyanide poisoning in an Idaho church in 1982 as Dr. Mathew Francis Betkouski, an organic chemist whose past includes discussions of cyanide and a map of Chicago, prompting renewed interest in the 1982 Tylenol murders.

Credibility 72% Manip. 32% Center
September 23, 2026
3 total
Idaho police identify 1982 "Unknown Wanderer" and explore possible link to Chicago Tylenol murders
Idaho police identify 1982 "Unknown Wanderer" and explore possible link to Chicago Tylenol murders

CBS News • 23 Sep 21:16

Boise authorities have identified the man found dead in a church in 1982 as Dr. Mathew Francis Betkouski and have shared evidence with Chicago investigators to assess any connection to the 1982 Tylenol poisonings.

Credibility 72% Manip. 8% Center
Idaho detectives identify 1982 Boise suicide victim, explore possible link to Tylenol poisonings
Idaho detectives identify 1982 Boise suicide victim, explore possible link to Tylenol poisonings

NBC News • 23 Sep 20:53

Idaho cold-case investigators have identified the man who died by cyanide poisoning in a Boise church in 1982 as Dr. Mathew Betkouski and are reviewing whether he may have been involved in the 1982 Tylenol murders in Chicago.

Credibility 72% Manip. 9% Center
Idaho detectives identify 1982 Boise suicide victim as possible link to Tylenol murders
Idaho detectives identify 1982 Boise suicide victim as possible link to Tylenol murders

The Spokesman-Review • 23 Sep 16:30

Idaho law enforcement has identified the unidentified man who died of cyanide poisoning in a Boise church in 1982 as Dr. Mathew Francis Betkouski, a chemist whose activities may be connected to the 1982 Tylenol capsule poisonings, and are seeking information from the public.

Credibility 72% Manip. 9% Center

Related events