Detectives investigating a murder 40 years ago managed to identify the author of the offense with genetic technology

Detectives investigating a murder 40 years ago at Portland, Oregonthey managed to identify the author of the facts through innovative technology genetics based on family trees, as reported today at a press conference.

Anna Marie Hlavka, 20 years, She was badually badaulted and strangled with the cord of his electric clock in his Portland apartment, now four decades ago. His sister found the body, but the case was closed due to lack of evidence.

According to the Portland Police's official statement on this case, the perseverance of the investigators present at the press conference ultimately helped to identify the murderer.

It is about Jerry Walter McFadden, born March 21, 1948 and executed in the state of Texas in October 1999.

The work of the detectives is complemented by the work of NanoLabs, the City of Portland, and the Oregon Police Crime Lab.

In 2011, a survey was conducted that was considered "a complete profile"which is unusual for such old cases becauseDNA tests can degrade over time.

Everything was frozen until, in May 2018, the detectives focused on the forensic genealogy with the help of DNA profiles unidentified found in homicide scenes.

To create genealogical trees, the genetic genealogy compares the comparative badyzes of DNA tests with other data sources used in traditional genealogy, such as census records, vital statistics registries , obituaries and newspaper archives.

McFadden was sentenced on several occasions for murder and rape between 1973 and 1985, but he was still granted parole until in 1986, in Texas, he escaped from prison and abducted a prisoner. correctional officer, holding her hostage for three days.

The leak took place while the murderer was awaiting trial for the rape and death of three people. Regarded as "the biggest persecution in Texas history," 1,200 officers helped arrest McFadden.

The cooperation of the McFadden family, which facilitated DNA testing and information on the murderer, made it possible to resolve the case of Anna Marie Hlavka very quickly.