A cold case involving a man found dead from cyanide poisoning in a Boise church in 1982 has been solved, identifying him as Mathew Francis Betkouski, a Florida resident and former chemist with a history of mental illness.
Forensic psychiatrist Park Dietz consulted with police during the Chicago Tylenol murders and has now been working with the Ada County Sheriff…
Side-by-side photos at the Ada County Sheriff’s Office show a sketch of an unidentified man next to Mathew Francis Betkouski, Sept. 23, 2026.
Mathew Francis Betkouski has not been officially declared a suspect in the Chicago Tylenol murders, but has not been ruled out.
The case of Boise’s Unknown Wanderer was revisited with Detective Tim Cooper leading efforts, Sept. 23, 2026.
Sheriff Matthew Clifford and the Ada County Sheriff’s Office have been revisiting a 1982 cold case, Sept. 23, 2026.
