On Sept. 23 — the morning that Vallow's visiting friends, Melanie Gibb and David Warwick, asked about J.J.'s whereabouts, and Vallow replied that Cox had taken him away after J.J. climbed up a kitchen cabinet and knocked a picture of Jesus off a refrigerator — Cox's cell phone again pinged at Daybell's property around 10 a.m. near a pond.
Authorities who later obtained a search warrant of Daybell's property and dug near the pond found recently disturbed ground covering flat rocks placed atop two pieces of buried paneling, and underneath the paneling, a body wrapped in black plastic that was later identified as J.J.'s.
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Tammy Daybell died in October from what officials said at the time were natural causes, but have since termed "suspicious" and are investigating further. Vallow and Daybell were married two weeks later.
Cox died in December. A medical examiner finally ruled in May that Cox died from a condition in which blood clots block the lung arteries. "Alex's death had no sinister aspect," said a statement issued at the time on his family's behalf. "Rampant rumors of evil plots and conspiracy robbed the family of their time to grieve the loss of their husband, son, brother and uncle. Even so, the family finds comfort in the medical examiner's finding that Alex Cox died of natural causes."
No further details have been released regarding Charles Vallow's death.
Daybell, who was arrested after the bodies were discovered, has been charged with two counts of destruction, alteration and concealment of evidence.
Vallow, who was arrested in February after defying a court order to turn over the kids to police, is charged with felony counts of desertion and nonsupport of dependent children, resisting or obstructing officers, criminal solicitation to commit a crime, contempt of court and willful disobedience of court process or order for failing to produce the children during the search for them.
No charges have been filed in connection with the deaths of the children.
Both remain jailed and have pleaded not guilty to the charges.
Attorneys for the couple have not responded to repeated outreach efforts by PEOPLE.
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