The mother of the three sisters discovered dead at a remote campsite has expressed her thoughts on their ‘broken’ father, who is suspected of their gruesome murder.

Travis Decker who is believed to be in hiding at a popular tourist spot in Washington State is not a cold-blooded killer, Whitney Decker has said.

The grieving mother, whose daughters Olivia, 5, Evelyn, 8, and Paityn Decker, 9, were found deceased on Monday, has criticized the system for their father’s alleged deeds.

Decker was identified as the murder suspect after his vehicle, where he lived, was located 75 to 100 yards from the girls’ bodies, featuring two bloody adult-sized handprints on the tailgate.

Cops believe the 32-year-old dumped his daughters at the campground in Wenatchee, roughly three hours east of Seattle, after killing them.

A major manhunt was sparked last weekend after Decker failed to return the girls home on Friday following a court-ordered custody visit.

Now as the search for the veteran continues and the cops reveal that the children were likely suffocated to death, Whitney has said Decker is a “broken” man and not a cold-blooded killer.

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 for the visit
•  Eerie video of Decker showed his recent appearance
• Cops fear Decker could survive in the woods for MONTHS due to extensive military training
• His ex-wife said Decker was homeless and living out of his truck at the time
• 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

“It’s clear that something broke in him because no person can go out there and be a parent to three beautiful girls for nine years, pretend like he loves them, if he’s intending to kill them for nine years,” Whitney’s lawyer, Arianna Cozart, told The Post, speaking on behalf of her client.

“It’s obvious something broken him. He’s a broken human, like anybody who could commit such a heinous act is, you know, I don’t know the better way to put it.”

Whitney revealed she and Decker divorced two years ago after a seven-year marriage and shared how the war vet had been desperately trying to seek help for his mental health.

She said the fugitive has PTSD and borderline personality disorders and had he gotten the help he so wanted, their children would be alive today.

“If Travis had been able to get the help that he was seeking, that he was reaching out for, then those girls would still be alive,” her lawyer said.

“There is not one instance that shows that Travis did not love those girls and was not a loving, active father.

“He never raised his voice to those girls. He never hit them. He never took off with them before.”

HAPPIER TIMES

Whitney shared a heartbreaking homemade video she created for Decker for Father’s Day with PEOPLE showing a montage of the fun-loving dad and his children.

The 20-second clip set to the song ‘Happy’ by Pharrell Williams features a slideshow of pictures featuring Decker, Whitney and their beloved girls.

It showed happy family moments from the children growing up including Decker walking one of his daughters at an airport and cuddling one of them in the pool on holiday.

The clip was shared just days before the children were found dead and Decker was named as a suspect, with Whitney saying that her missed ex-husband was a good parent.

Meanwhile, cops have warned residents to keep their doors locked as they continue to search for Decker.

He has been charged with three counts of first-degree murder, one count of kidnapping, and a range of custodial interference charges.

The search has intensified with more wilderness regions being search by land and by air with those living in remote cabins and rural areas given a warning.

Undersheriff Dan Ozment told those living in such places in Chelan, Kittitas, King, Snohomish and Okanogan counties lock all doors including to outbuildings and sheds.

They should also leave their window blinds open and outside lights on.

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”.

Decker left the army as a ranger voluntarily over a year ago and started living in his truck, “struggling with isolation” and working minimum wage jobs, Cozart said.

A former squadmate revealed to Fox News affiliate KCPQ-TV that Decker was a hardworking member of the 503rd Infantry Regiment but was quiet and a bit of an outcast.

The veteran who remained anonymous said that Decker acted like he had something to prove but that the news about his daughters have left former comrades in shock.

“All of us who served with him feel betrayed and are beyond distraught with the news,” the ex-squadmate said.

Anyone who sees him should keep their distance and call 911.

He is 5 feet, 8 inches tall, weighing 190 lbs., with black hair, likely in a ponytail, and has brown eyes.

Decker was last seen wearing a light shirt and dark shorts.