Last Confirmed Zodiac Killing and Timeline
The last widely accepted Zodiac killing occurred on October 11, 1969, when cab driver Paul Lee Stine was shot and killed in San Francisco, California. This attack is considered the final confirmed victim in the Zodiac Killer case, which began in late 1968 with a series of shootings in the San Francisco Bay Area. The case remains officially open with the San Francisco Police Department and the Vallejo Police Department, and no suspect has been formally charged with the killings. Law enforcement agencies continue to receive and review tips, and modern forensic techniques have been applied to original evidence, including handwriting samples and DNA from stamps and envelopes used by the killer FBI.
Between 1968 and 1969, the Zodiac claimed responsibility for at least five fatal attacks, though investigators have confirmed three murders and two survivals with certainty. The victims included David Faraday and Betty Lou Jensen on Lake Herman Road in December 1968, Darlene Ferrin and Michael Mageau at Blue Rock Springs Park in July 1969, and Paul Lee Stine in October 1969. The killer sent multiple encrypted letters to newspapers, taking credit for the attacks and threatening further violence. These letters contained cryptograms, one of which was solved in 2020 by a team of amateur codebreakers, revealing the name "Gary Francis Poste" as a potential suspect, though no charges were filed Forbes.
Investigation Status and Public Records
As of the most recent public updates, the Zodiac Killer case remains under active review by multiple Northern California law enforcement agencies, including the San Francisco Police Department and the Napa County Sheriff's Office. The case files are preserved in physical and digital archives, and periodic releases of evidence and documents have occurred in response to public records requests. In 2021, the Vallejo Police Department confirmed that they still receive an average of several new tips per year, though none have led to an arrest. The FBI maintains a dedicated case page with original correspondence, composite sketches, and forensic evidence summaries FBI.
Advances in forensic genealogy and DNA analysis have renewed interest in the case, and investigators have compared genetic material from original evidence against public genealogy databases. However, no definitive match has been publicly confirmed as of the latest available data. The San Francisco Police Department has not closed the case, and the Zodiac Killer remains one of the most famous unsolved serial killer cases in the United States. Media coverage continues to highlight the lack of resolution, and documentaries, books, and online databases regularly update the public on new leads and forensic developments Vallejo Police Department.
Key Suspects and Forensic Developments
Over the decades, more than 2,500 suspects have been investigated by law enforcement, with names such as Arthur Leigh Allen, Gary Francis Poste, and Lawrence Kane frequently mentioned in case files and public records. Arthur Leigh Allen was the most prominent suspect and was subjected to multiple polygraph tests, handwriting comparisons, and DNA analysis, but he was never charged due to insufficient evidence. Gary Francis Poste was identified by a private research team in 2020 based on a combination of forensic clues from Zodiac letters and circumstantial evidence, though no law enforcement agency has confirmed his involvement Forbes.
Forensic developments have included the use of advanced DNA extraction techniques on stamps and envelopes used by the Zodiac to send letters. In 2002, the San Francisco Police Department conducted a DNA test on a stamp from one of the letters, but the results were inconclusive. More recent efforts have focused on touch DNA and mitochondrial