Human remains found near a remote wooded area have been positively identified as Travis Decker, the 32-year-old father accused of murdering his three daughters near a Washington state campground this summer, officials said.
Both the DNA on clothing and human remains found on Sept. 18 came back as a "positive match for Travis Decker," Chelan County Sheriff Mike Morrison announced on Thursday.
"We hope that you can rest easy at night knowing that Mr. Decker is accounted for," Morrison said, calling the announcement a "full circle" moment.
The remains were found during a search south of Leavenworth, the Chelan County Sheriff's Office announced on Sept. 18.
Morrison said that the coroner is now doing the "best they can" to determine a cause of death, along with how long Decker had been dead before his remains were discovered -- a process that "could take months."
The Chelan County Sheriff's Office released photos of Travis Decker in a wanted poster.
Chelan County Sheriff's Office
When the remains were discovered, the attorney for Decker's ex-wife said the family was "praying that the remains found are confirmed to be Travis's."
"We continue to be grateful for law enforcement's efforts in this case and are forever appreciative of the entire world's love, compassion, and support for Whitney," Arianna Cozart, Whitney Decker's attorney, said in a statement.
After confirming the identity of the remains, Morrison said he hopes that Whitney Decker knows officials "never gave up" on the investigation and that the girls' memories "will live on."
"I hope we never see anything like this in Chelan County again," Morrison said on Thursday.
Decker, an Army veteran, was wanted for three counts of first-degree murder and three counts of first-degree kidnapping, police said.
The U.S. Marshals Service, which was previously offering a reward of up to $20,000 for information leading directly to Decker's arrest, declared Decker to be dead in a court filing obtained by ABC News on Wednesday.
"The United States Marshals Service has advised the Defendant TRAVIS CALEB DECKER is deceased," according to the document, which was filed to dismiss the case and quash the arrest warrant for Decker.
Travis Decker timeline: How an 'active dad' ended up allegedly murdering his 3 daughters
His daughters -- Paityn Decker, 9; Evelyn Decker, 8; and Olivia Decker, 5 -- had left home for a planned visitation with him on May 30, and never returned, officials said. Three days later, the girls were found dead near the Rock Island Campground in Chelan County, Washington, following a search, police said.
While Morrison said he hopes the family can "rest easy at night" knowing Decker has been accounted for, he said the announcement of Decker being deceased is "not going to bring Paityn, Evelyn and Olivia back."
"Nothing we can do is going to reverse this travesty and bring her daughters back," Morrison said.
Morrison added that they will never "have a true reason" as to why Decker committed these crimes.
Popular Reads
Sniper opens fire on Dallas ICE facility, killing 1 detainee, wounding 2: DHS Sep 25, 6:39 AM
Trump admin live updates: Trump meets with Turkey's Erdogan Sep 26, 4:37 AM
Video shows Charlie Kirk shooting suspect jump down from roof, make getaway Sep 12, 10:33 AM
The girls were each been found with plastic bags over their heads and their wrists were zip-tied, according to court documents previously obtained by ABC News.
Three young sisters, Paityn Decker, 9, Evelyn Decker, 8 and Olivia Decker, 5 have been missing since May 31 after leaving for a "planned visitation" with their father, according to the Wenatchee Police Department.
Wenatchee Police Department
An autopsy determined the girls' cause of death to be suffocation and the manner of death was homicide, the Chelan County Sheriff's Office said on June 9.
Decker's truck was recovered at the scene but he was not found, sparking a massive manhunt. DNA found at the scene, including bloody handprints found on the tailgate of Decker's truck, confirmed to officials he was the sole suspect.
Hundreds of people from dozens of agencies and organizations were involved in the manhunt. Throughout the search efforts, multiple possible sightings of Decker were reported to officials, including two in Idaho -- one on June 4 and another on July 5 -- and one in Washington on Aug. 1, with all three proving to be unsuccessful or turning out to not be Decker.
Undated photo of Travis Caleb Decker who the police are asking the public for help in locating the Washington state father who is wanted for murder after his three young daughters were reported missing and then found dead.
Wenatchee Police Department via AP
Decker allegedly had some "mental health issues and some instability in his life" that led to restrictions regarding overnight visitation and taking his daughters out of the area, but before the girls disappeared, "there were no red flags," Cozart told ABC News in June.
Cozart also said Decker allegedly struggled with post-traumatic stress disorder and was unable to receive help through veterans' resources.
Nearly two months into the search for Decker, officials said they were scaling back the manhunt amid a "decrease in leads and tips," but encouraged "everyone venturing out into these areas remain vigilant and report any suspicious activities."
Travis Decker search: Authorities reveal disturbing crime scene details, new DNA analysis
Previously, Chelan County Morrison had told ABC News they were not going to give up on the case.
"We could be in a fight for five years, 10 years, 20 years. I certainly hope we're looking at a couple weeks and it closes out, but it could be a long time and we are committed to staying with it," Morrison told ABC News in July.
In August, the FBI announced it would be conducting an investigation at the campground where the girls were found dead, with officials finding "several items," including bones. However, they were ultimately determined to not be human.
"We will not relent. We will not give up," Morrison said during a press conference on Aug. 25. "The girls would not want us to give up."
At a memorial held for the three children back in June, Whitney Decker described them as having "warm and open hearts."
"I'm so thankful for the time that I had with the girls. I truly hope that the legacy of the girls' lives lives in everyone's hearts forever. They were incredible," Whitney Decker said at the time.