DNA Analysis

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• Leveraging forensic genetic genealogy to solve cold cases

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  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

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  How this agency is overcoming the recruitment challenge

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  Amazon

  Unlike most agencies, Summerville PD in South Carolina has few problems in finding and hiring top-quality candidates to the force. Here are some of the reasons Summerville PD is competing favorably for talent.

• 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

• Amid debate, NY OK's family-DNA searches for suspects

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  At least 10 other states and some other countries use familial searching

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