Notebook found in Brian Laundrie search could reveal TRUTH behind Gabby Petito’s murder as cops hunt suicide note

that a notebook would be damaged but not destroyed if in a waterproof bag.

Laundrie was pictured with notebooks while traveling with Gabby Petito.

In one photo, Brian was tucked under some blankets next to a stream and appeared to be relaxing in a hammock while they explored the Appalachian Trail in Georgia.

A green spiraled notebook was seen stacked on top of a paperback edition of Lullaby by Chuck Palahniuk with a handful of fine point ink pens.

Gabby commented on the photo: "Went hiking for my #22."

And, during their ill-fated cross-country road trip, an orange notebook can be seen inside a tent while the young couple was camping at Zion National Park, Utah.

Other notebooks appear to be shelved inside Gabby's immaculately decorated 2012 Ford Transit Connect van's interior.

Remains were also unearthed at the reserve but they've not been formally identified.

The medical examiner was called in on Wednesday morning after the fugitive's parents reportedly discovered a white bag and a dark-colored object in a patch of brambles.

'POTENTIAL CLUES'

The  later confirmed that "items of interest" were found, adding that their "evidence response team is processing the scene" and will be there for several days.

Laundrie's parents had joined the search at the creek on Wednesday, as it was closed again just one day after being reopened to the public.

Family attorney Steven Bertolino told The Sun that the Laundries were there when the remains and items were found "in an area where they had initially advised law enforcement Brian might be."

"Chris and Roberta will wait for the forensic identification of the human remains before asking any additional questions," the lawyer said.

In video footage captured by Fox News, Roberta and Chris were caught speaking with a police officer on a hiking trail in Myakkahatchee Creek.

While much of the conversation is inaudible, the officer at one stage seems to tell them "we've found something" and advised the pair to go home.

'REMAINS FOUND'

The officer placed his hand on Chris's shoulder during the exchange. Roberta then turned to face him and wiped his cheek.

Private investigator Bill Warner said Laundrie was more likely to “kill himself” than to “sit around a wait to die” following the FBI's apparent discovery.

Warner told The Sun that the fugitive is “most likely dead in the reserve”.

He speculated: "It's basically over ... most likely he is dead in the reserve, possibly killed himself, not likely he just sat there and waited to die."

And reality TV star Dog the Bounty Hunter appears to be calling off the search for Laundrie.

Dog, real name Duane Chapman, previously scoured the Fort de Soto campground after it emerged the Laundries spent Labor Day there.

The bounty hunter told the Sun: “We are praying for Gabby’s family as yet another day ends with seemingly more questions than answers though it does seem the search for Brian is indeed over.”

He expressed gratitude to the authorities probing the case.

Teams are expected to remain on the ground at the Carlton Reserve for several days and a no-fly zone has been put in place over the area.

Gabby Petito’s remains were found on September 19 in a Wyoming campsite – a week after she was reported missing.

Coroners initially ruled the manner of her death a homicide before weeks later confirming that she died from strangulation.