NOTES and unseen phone records could be crucial pieces of evidence for investigators as cops try to work out who killed YouTuber Gabby Petito, a DNA expert says.
Coroners ruled that the vlogger died from strangulation after her remains were found in a Wyoming campground on September 19 – but cops haven’t named her killer.
The YouTuber was reported missing on September 11 – weeks after losing contact with her family.
She had been visiting idyllic canyon ranges and touring national parks across America’s midwest with her fiancé Brian Laundrie after leaving New York at the start of July.
Laundrie was identified as a person of interest in Gabby’s disappearance and death. He was never named a suspect.
Paul Belli, of the International Homicide Investigations Association, told The Sun that potential notes and drawings could be useful to investigators in their probe.
A notebook was found last month as cops unearthed Laundrie's "partial remains" while combing the Carlton Reserve in Sarasota, Florida.
Criminologist Casey Jordan said a notebook “pointed to the possibility” of a suicide note, 7News reports.
Jordan told CNN: “That really raises the question if indeed this is Brian Laundrie and if he died by his own hand, did he take the time out to write out a note of explanation, maybe even regret?
“Something that would give answers to not only police. If that notebook is there, there is a good chance there could be a note.”
Online sleuths speculated that Laundrie may have written a “confession note” in the notebook.
And web detectives, who claimed to have unearthed a series of “demonic artworks” on Laundrie's social media profiles, claim the journal could contain chilling drawings.
One Facebook "detective" said: "I think it's probably his art. They were both into drawing."
An internet sleuth feared: "My theory is drawing of the events that led up to it and during her strangulation. It's going to be dark (sic)."
It’s not known what, if anything, is inside the notebook that officers reportedly found.
Belli added that cops will have “gathered mountains of video footage” but warned it could take months to trawl through.
Investigators hope that the 23-year-old’s “digital footprint” will contain never-before-seen information, The Independent reports.
Belli said: “When you look at what an average download on a phone is, it’s thousands of pages when you actually put it into a PDF. While it’s fairly searchable by keywords, there’s a lot of sitting there minute-for-minute reading.”
Belli, an ex-lieutenant of the Sacramento County Sheriff’s Office, thinks Gabby’s killer could have left DNA on her body.
He told CNN: “You would expect DNA on either one of them from the other. But I mean, if there’s DNA maybe where it shouldn’t be, that could be kind of a clue as to what may have occurred.
“So there are ways to absolutely, at least get you to a point where you’re like ‘Ok this definitely makes sense, this is the person who did this crime.”
A preliminary autopsy stated the manner of her death was homicide before coroners revealed her cause of death.
Teton County coroner Dr Brent Blue said Gabby’s predicted death was three to four weeks before her body was found.
Blue said her remains were outside “in the wilderness” for this time.
The doctor also confirmed that Gabby was not pregnant at the time of her death and a toxicology report was unable to be released at this time.
Dr. Blue said state law prevents what coroners can release about the autopsy.
Belli fears that investigators may not fully know what happened in Gabby’s final moments.
He said: “I think they’ll get a lot of information and have a circumstantial idea of what actually occurred but there’s a good possibility that they may never know every detail.”
Laundrie’s remains were positively identified through his dental records – exactly a month after those of Gabby.
They were sent to an anthropologist for further tests as an autopsy came back inconclusive.
A cause of death has not yet been disclosed but the Laundrie family attorney Steven Bertolino says the autopsy results could be returned within two to three weeks.
The lawyer said: "I was told one to two weeks for the updated report on the cause of death and that was a week ago so I suspect another week or so."
The investigations into Laundrie and Gabby's deaths are active and ongoing.
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