Im not saying these cases are related, I just want to point out the tools used in Vanessa Marcottes case, and what led to the recent arrest of the suspect in her murder 8 months later.
- Vanessa Marcotte, 27, was murdered in Princeton, MA in August 2016 after she went out for a jog. They had the suspects DNA from her hands/fingernails, but there was no match in the database.
- One of the tools they used in that case was Parabon Snapshot (forensic DNA analysis service) to get a profile of the suspects physical appearance. It appears they also had a witness description of possible suspect and vehicle.
- Based on the information they collected, they released a profile of the suspect to the public in February, 2016, 6 months after Vanessas murder. It included info from DNA analysis, witness description, and mentioned that the suspect would have sustained scratches, etc.
- An alert state trooper saw a man and a car that matched the suspect's description, and did a cheek DNA swab test that eventually led to the suspects arrest this past Friday, 8 months after the murder.
If they have suspect DNA from Abby and Libbys murder, Im sure the investigators have or will be doing similar analysis. But as in this example, it wasn't just one thing - it was a combination of information they collected, evidence and police work that led to the arrest. And it took some time.
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Snapshot DNA Analysis:
Snapshot is a revolutionary new forensic DNA analysis service that accurately predicts the physical appearance and ancestry of an unknown person from DNA. It can also determine kinship between DNA samples out to six degrees of relatedness. Snapshot is ideal for generating investigative leads, narrowing suspect lists, and identifying unknown remains.
Starting with extracted DNA or biological evidence from your case, we will produce a detailed Snapshot report and composite profile that includes eye color, skin color, hair color, face morphology, and detailed biogeographic ancestry. Armed with this scientifically objective description, you can conduct your investigation more efficiently and close cases more quickly.
We focus on externally visible traits. So we do eye color, hair color, skin color, freckling, the shaping of the face, then also the persons geographic ancestry or ethnic ancestry. So where their ancestors are from. Using DNA gathered at a crime scene, said Ellen McRae Greyak, the director of the Virginia lab, Parabon.
There are limits to the technology. So far it is not possible to predict height and weight. Still, the testing helps police eliminate suspects that dont fit the DNA profile.
https://snapshot.parabon-nanolabs.com/
http://www.nbcboston.com/news/local/Police-Make-Arrest-in-Case-of-Vanessa-Marcotte-419529293.html
http://www.masslive.com/news/worcester/index.ssf/2017/02/vanessa_marcotte.html
http://www.websleuths.com/forums/sh...murdered-Princeton-7-August-2016-7-**ARREST**