Overview
- Ada County announced on Wednesday that DNA and records work have identified the man found dead by cyanide in a Boise church in December 1982 as Dr. Mathew Francis Betkouski and officials said he is not being named a suspect in the Tylenol killings.
- Investigators traced a key etching to a Jacksonville address, used property and death records, contacted a surviving family member and matched DNA to confirm Betkouski’s identity.
- The sheriff’s office described a 'possible connection' between the identification and the seven 1982 Tylenol poisonings but has not released evidence supporting that link.
- The Arlington Heights Police Department, which leads the Tylenol investigation, reviewed information from Ada County, reported no new public details and said the active investigation continues.
- Authorities plan a news conference with Unsolved Mysteries producers, are seeking public tips, and say the identification could prompt new cross-jurisdiction vetting that may produce leads for families of the Tylenol victims.