The man convicted of slaughtering his neighbors in an effort to "execute vengeance" will spend the rest of his life behind bars, a judge ruled earlier this week.

Majorjon Kaylor, 32, pleaded guilty to four counts of second-degree murder in connection with the deaths of Kenneth Guardipee, 65; his daughter, Kenna Guardipee, 41; and her two teenage sons, Devin Smith, 18, and Aiken Smith, 16; at their shared Kellogg, Idaho, duplex, according to court records.

Kaylor was previously charged with four counts of first-degree murder and two counts of burglary but pleaded guilty to the lesser charges.

According to the affidavit, Kaylor admitted he was driven to commit the quadruple fatal shootings in June 2023 after Devin allegedly masturbated in front of his wife and their daughters.

During police questioning, Kaylor referred to Devin as a "pedophile" who "conducted acts of nudity" in front of his kids.

Kaylor said he confronted Devin's mother, Kenna, and his grandfather, Kenneth, about the incident, but alleged they did not take the issue seriously. He told detectives he "snapped," "lost it," and "did something about it," the affidavit read.

Judge Barbara Duggan delivered Kaylor's fate Monday, despite the prosecution's recommendation of a 50-year prison sentence.

"You took your firearm and you chose to execute them," Duggan told Kaylor, the Shoshone News-Press reported. "You knew it was unlawful and you chose to do it. Most case law deals with one victim, not four. This is beyond what we typically see, even in the criminal justice system."

In addition to life in prison, Kaylor was denied the possibility of parole.

Family members gave victim impact statements before Kaylor's sentencing.

"He killed an entire branch of our family tree. Never any great grandchildren to watch grow up. I lost my best friend (referring to Aiken)," according to KHQ-TV. "He spent hundreds of hours volunteering throughout the community. An entire beautiful family taken by one person," David Silva, Aiken and Devin's paternal grandfather, said.

It's unclear if Kaylor's defense team will appeal his sentence. His attorney, Chris Schwartz, did not immediately respond to Headline & Global News' request for comment.