The Zodiac Killer has never been officially found or identified by law enforcement in California, and the case remains open to this day. Although investigative teams and amateur sleuths have publicly named suspects over the years—most notably Gary Francis Poste in 2021 by a group called the Case Breakers—police agencies and the FBI have repeatedly emphasized that these claims remain unsubstantiated and largely circumstantial.

Official Status

• The San Francisco Police Department and other California agencies continue to treat the Zodiac case as unsolved and active, with ongoing cold case reviews.

• DNA evidence, which could potentially definitively identify the killer, has so far been inconclusive, with tests producing only partial or contaminated profiles.

Suspects Named

• Gary Francis Poste, an Air Force veteran who died in 2018, was named by the Case Breakers in 2021, but this identification is not recognized by law enforcement due to lack of direct, irrefutable evidence.

• Arthur Leigh Allen, a Vallejo schoolteacher, has long been considered a prime suspect, but no proof has ever linked him conclusively to the Zodiac crimes.

Why No Arrest?

• The Zodiac Killer's random victim selection, cryptic taunts, and movement across multiple jurisdictions made collection of conclusive evidence extremely challenging.

• Witness reports, police sketches, and cipher letters have yielded intrigue but failed to provide definitive clues about his identity.

The mystery of the Zodiac Killer continues to puzzle investigators and enthusiasts, and as of November 2025, there has never been a confirmed identification or arrest for these notorious California serial murders.