DNA Evidence Helps Identify Serial Killer in Recent Case

November 9, 2026 • Al Jazeera

DNA Evidence Helps Identify Serial Killer in Recent Case

A 21-Year-Old Cold Case Solved Through DNA Technology

Leslie Preer’s murder remains a mystery until recently, when new DNA technology led police to a suspect thousands of miles away. Leslie Preer was murdered 21 years ago. Her husband had been the primary suspect in the case, but it went cold over time. New DNA evidence has now identified a different individual as the prime suspect.

The investigation into Leslie Preer’s murder began 21 years ago and remained unsolved until new DNA technology became available. The police used this technology to re-examine existing DNA samples and compare them to known DNA profiles. This led to the identification of a suspect who was thousands of miles away from the crime scene.

The next step in the investigation is to set up a trap for the suspect, which will require careful planning and execution by law enforcement officials. The case has now taken a new turn, with the police working to apprehend the individual believed to be responsible for Leslie Preer’s murder.

This episode of True Crime Reports was produced by Al Jazeera Originals. The host is Halla Mohieddeen, and the writer is Ryan Gaffney. The production team includes Jo de Frias as Head of Podcasts, Fahrinisa Campana as executive producer, Leo Danczak and Marthe van der Wolf as senior producers, Catherine Nouhan as producer, Ashley McCarry as production coordinator, Danylo Hawaleshka as senior script editor, and others. The episode was fact-checked by Catherine Nouhan, Zaina Badr, and Chiara Brambilla.

Source: Al Jazeera