DNA Analysis

Leveraging forensic genetic genealogy to solve cold cases

Detective Ashley Nolan of the Chandler Police Department in Arizona details how her PD solved a sexual assault cold case from 1986

Ore. police make arrest in 21-year-old homicide by matching DNA on public genealogy site

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DNA evidence was sent to a private lab that compared the DNA to publicly available databases shared by consumer companies like 23andMe

Police recruitment and retention woes are increasing – here’s how your agency can respond

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PlanIt Schedule

Policing during a pandemic calls for workforce management systems that keep every officer in the know

Ill. police identify killer of teen girl in 1976

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The now-dead suspect is believed to be linked to other cold cases from the 1970s

Headless torso found 40 years ago in Idaho cave identified as bootlegger

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The outlaw killed his wife with an ax and was last seen after escaping from jail in 1916

12 LE gamechangers of the 2010s

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Here are the events and technologies the P1 team and our readership viewed as having the most significant impact on the profession in the last decade

The risks of eyewitness identifications

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In this tip, Lexipol co-founder Gordon Graham discusses why a case based primarily on an eyewitness identification should be considered extremely risky.

For more top tips from Gordon, click here.

Calif. cold case solved through DNA, genealogy

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Terri Lynn Hollis disappeared from her Torrance home on Thanksgiving in 1972. Her body, clad only in a T-shirt, was found the next day by fishermen

Launching the first statewide rape kit tracking system

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The Idaho Sexual Assault Kit Initiative focused on developing a model statewide policy for testing sexual assault kits

'John Doe DNA' from 1992 matched to Calif. rape suspect

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DA Anne Marie Schubert said it was the first time in California that DNA was charged with a crime

A new method of DNA testing could solve more shootings

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Criminologists thought it was impossible to get DNA off of shell casings, but a technique pioneered in the Netherlands is having notable results

Police history: How a magazine ad helped convict a rapist

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At a time when DNA testing was in its infancy, U.S. investigators used this emerging tech to convict a serial rapist

How new DNA technologies are changing criminal investigations

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Using DNA evidence, Richland County investigators were able to solve a grisly murder from 30 years ago

Charge added in 'Golden State Killer' case boosts victims to 13

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Joseph DeAngelo was previously charged in 12 killings throughout the state in the 1970s and 1980s

Policing Matters Podcast: Using DNA evidence in police investigations

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Jim and Doug discuss the ever-increasing role of DNA evidence – as well as the rapidly growing use of publicly available DNA databases – in police investigations