PHOENIX (3TV/CBS 5) - Phoenix police say the FBI reached out to them about a month ago in regards to another death involved in the Lori Vallow saga.
Lori's third husband, Joseph Ryan, died in 2018 from an apparent heart attack. His body was cremated. Phoenix police say they provided information to the FBI, but so far, the FBI has not asked them to do any further investigation.
Lori and Ryan divorced in 2004. Court paperwork from 2011 outlined a contentious custody battle over their daughter, Tylee Ryan. Joseph claimed Lori would not let him see his daughter, despite their custody agreement.
After one visit with Tylee, Lori's brother Alex Cox attacked Joseph with a stun gun and threatened to kill him. Cox was convicted of that crime.
A family member related to JJ and Tylee says that after Joseph's death, Lori told them she received his life insurance policy and planned to share it with Tylee. That family member also said Lori stated Joseph was "evil" and "God took care of him."
Lori is currently in jail facing two felony charges of desertion of a child, obstruction, solicitation and contempt. She has not told authorities where her children, J.J. and Tylee, are. They went missing in September.
There are three other deaths authorities are investigating.
Charles Vallow, Lori's fourth husband, was shot and killed by Cox in Chandler in July. He claimed self-defense. Charles had a $1 million life insurance policy, which went to his sister.
Lori married Chad Daybell, an author of doomsday books, two weeks after his wife Tammy died in her sleep. Court documents show Tammy had a $430,000 life insurance policy in her name. Her body was exhumed and autopsy results are pending. Cox also died in December and is under investigation.
She was booked into the Madison County Sheriff's Office jail on Thursday evening.
Sources close to the investigation tell CBS News that Alex Cox, Lori Vallow's brother, may be linked to Tammy Daybell's death. However, he died before he could be questioned by the authorities.