TRAVIS Decker, the dad accused of kidnapping and murdering his three daughters made chilling web searches days beforehand.

As the manhunt for the war veteran continues, an investigation into his internet history reveals his possible escape plan.

Police suspect Decker murdered Olivia, 5, Evelyn, 8, and Paityn Decker, 9, during a court-mandated custody visit, subsequently abandoning their bodies at a secluded campsite in Washington State.

Whitney Decker, the mother of the children and Decker’s ex-wife reported the girls missing on May 30 after he failed to drop them home.

They were last seen with their father around 5 pm local time after he picked them up that day.

The siblings were discovered at Rock Island Campground, located approximately an hour from Wenatchee, Washington, near Decker’s vehicle, which bore bloody handprints on its tailgate.

It comes as…

• The girls’ bodies were found on Monday as cops said they likely died of asphyxiation
• Travis Decker’s truck was found 75 to 100 yards away with two bloody adult-sized handprints on the tailgate
• The girls’ mom, Whitney Decker, said her ex-husband was unusually quiet when he picked them up
•  Eerie video of Decker showed his recent appearance
• Cops fear Decker could survive in the woods for MONTHS due to extensive military training
• Whitney shared the final message Decker gave her before the alleged killings
• Officials shot down claims Decker was seen in Idaho
• A GoFundMe for Whitney has raised over $1 million
• Whitney shared a father’s day video saying something ‘broke’ in Decker and he was a loving dad and husband

Cops believe the three children were suffocated to death as they continue to hunt for Decker who is on the run.

As Governor Bob Ferguson mobilized the National Guard to assist in the extensive manhunt for Decker involving more than 100 officers, an examination of his internet search history uncovered a potential escape strategy.

A US Marshals Service affidavit obtained by Fox News affliate KCPQ claims he searched “how to relocate to Canada”.

Other searches found on his Google account included a Canadian job website and “how does a person move to Canada”.

These were carried out on May 26, just days before Decker failed to return the children to their mother.

Court documents seen by KCPQ also reveal that the 32-year-old’s phone records show “he drove to and left the same campground a day prior to the kidnapping.”

Officials who are already concerned about how Decker’s military training will make him hard to find have highlighted their concerns that he has crossed the border.

There is currently no official port of entry at that part of the border so hikers can freely cross into Canada without detection.

“The location of the victim’s remains is relatively close to the Canadian border and approximately 11 miles from the Pacific Crest Trail, a well-established trail that leads directly Canada,” the affidavit read.

Authorities have launched a land and air search of the popular tourist spot but nothing has emerged yet.

The Chelan County Sheriff’s Office involved in the hunt has revealed that Decker’s military past means he is “well versed in wilderness survival”.

He is “capable of spending days or even weeks in the wilderness on his own and with very little equipment”.

Court documents highlight that Decker is trained in navigation, mountainous and woodland terrain, long-distance manoeuvers and wilderness survival.

“We are searching anywhere and everywhere for him,” Chelan County Sheriff Mike Morrison said.

Those living in remote cabins and rural areas have been warned to keep their doors locked to all buildings including sheds.

They have also been told to keep their outdoor lights on and window blinds open.

To help with the search, the Sheriff’s Office has released some new pictures of Decker.

The updated release continues to warn the public that he is “considered dangerous and may be armed, call 911 immediately”.

The pictures taken from a surveillance camera show him walking in a t-shirt, shorts, and sandals with facial hair and a pony tail.

Others show close-ups of the distinctive tattoos he has on his arms and ankles.

His grieving ex-wife has said that “something broke in him” after he struggled to get help for his mental health issues, insisting he was a good father and never violent to her or the children.

Decker’s arrest warrant charges him with three counts of first-degree murder and kidnapping.