DNA Technology Helps Solve 30-Year-Old Cold Case in Illinois

Decades-Old Case Solved

The 1993 murder of Randy Gail Sperino in Granite City, Illinois, remained unsolved for three decades despite initial DNA evidence being tested against law enforcement databases. Sperino, 34, was found deceased hours after being last seen, the victim of blunt force trauma. Investigators from the Madison County Sheriff's Office pursued leads for years without identifying a perpetrator.

New DNA Technology Applied

Last year, detectives sent genetic evidence from the crime scene to Othram, a Houston-based company specializing in using DNA technology for cold and current crime cases. This approach was inspired by the investigative genetic genealogy techniques that led to the identification of the Golden State Killer in 2018. Unlike traditional forensic DNA testing, which requires a direct comparison, this method identifies distant genetic relatives from commercial databases.

Breakthrough Lead and Arrest

Othram's analysis of the DNA evidence identified a male family member of the unknown individual, providing a crucial lead. This information directed detectives to Albert "Buddy" Zigler, 70, who subsequently confessed to the murder. Zigler was charged in May of this year, bringing closure to the victim's family.

Impact on Forensic Investigations

The technique employed in this case is credited with transforming how forensic cases are solved. It has proven successful in identifying human remains and suspects in long-standing investigations. Othram states it has contributed to solving thousands of cases using this method.