Lori Vallow and Chad Daybell, a mother and father of two Idaho children who were last seen in September 2019, were charged with murder Tuesday in the children's deaths.
Joshua "JJ" Vallow and Tylee Ryan were 7 and 16 years old respectively when they disappeared.
Daybell has also been charged with murder and fraud in connection with the death of his then ex-wife Tammy Daybell.
Daybell is a self-published author who has written more than a dozen books on death and doomsday events, and many people close to Vallow have raised red flags for his bizarre beliefs of doomsday and attitude.
The lawsuit released Tuesday said the couple "confessed and supported religious beliefs with the intention of encouraging and / or condoning the massacre" of Tylee, Joshua and Tammy Daybell.
When Daybell first appeared in court on Wednesday, he was informed of the charges against him and the sentences he could receive. His trial is scheduled for June 9.
Vallow also appeared in court on Wednesday, but Judge Faren Eddins said the hearing would be postponed at the request of Vallow's lawyer based on "information provided by the court." He did not elaborate or set a new date.
Vallow and Daybell's lawyers did not immediately respond to the request for comment. If convicted, they could face life imprisonment or the death penalty. Prosecutors in Idaho have 60 days to decide whether to follow the death sentence.
"Local, state and federal prosecutors have worked tirelessly for a year and a half to gather the facts and evidence needed to bring charges against Tylee, JJ and Tammy," said Fremont County prosecutor Lindsey Blake. said a statement Tuesday.
"Due to the ongoing security restrictions imposed by the courts during the epidemic, we were recently granted permission to submit information to the Grand Jury for review.
Tylee was last seen on September 8, 2019. Police were able to obtain a photo from that day of Tylee on a trip with Vallow, Vallow's brother, Alex Cox, and Joshua to Yellowstone National Park, according to authorities.
Joshua, who had special needs, was last seen alive on September 23, 2019 at Kennedy Elementary School in Rexburg. When police went to Vallow's house to do a social check as instructed by his grandmother in November, Joshua was no longer available.
Joshua Vallow and Tylee Ryan Freemont County Sheriff's Office
But Vallow and Daybell had never reported the children missing and had not cooperated with investigators before fleeing the state, Rexburg police said.
They were found in Hawaii in January 2020, when authorities gave Vallow for a month "to produce her children physically." He did not, and he was charged with two counts of abandoning and not supporting his dependent children.
In June 2020, Daybell was arrested after the discovery of the remains of Vallow's children in her area.
Daybell had previously been charged with two counts of conspiracy to destroy, alter or conceal evidence and two counts of murder, alteration or concealment of evidence. He denied the charges.
Vallow had previously been charged with felony criminal mischief for firing on a sculpture with a criminal charge. He denied the charges.
Daybell and Vallow were married a few weeks after Daybell's first wife, Tammy Daybell, was found dead in her home in October. He was 49 years old.
Tammy Daybell's death was initially considered normal but since the classification was suspected, her bones were removed for autopsy. An autopsy was completed in February this year, and his death was acquitted as a murder charge, charges were released on Tuesday.
Prosecutors said Daybell and Vallow texted each other saying they believed Tammy was "asleep" and "possessed by a ghost named Viola" before she was killed.
Vallow's fourth husband, Charles Vallow, also died in 2019. He was shot dead by Vallow's brother, Alex Cox, in July during an altercation in Chandler, Arizona. Cox said in his defense. The Maricopa County Medical Examiner in Arizona has ruled the murder as a homicide.
Vallow and Cox were questioned by police but could not be charged.
Cox died in December with blood clots, the Associated Press reported. He was appointed by prosecutors on Tuesday as part of a conspiracy to assassinate Joshua, Tylee and Tammy Daybell.
Before Charles Vallow died, he filed for divorce, stating in the papers that his wife believed he was born again and was a god sent to lead the people during the second coming of Christ in July 2020, and told her husband that if he went his way, he would kill her.
Vallow's third husband and Tylee's father, Joseph Ryan, have also expressed "genuine and serious concern" in court documents between their fight for divorce and the right to custody of children. The documents state that Vallow was ordered to undergo a psychiatric examination after telling social workers that "death would be a way to give Tylee's father, Mr. Joseph Ryan, even a visit."