Prosecutors say Brian Walshe made numerous internet searches around the time his wife, Ana Walshe, disappeared on New Year's Day, including, "10 ways to dispose of a body if you really need to."
Church employees found 69-year-old Evelyn Player fatally wounded in a locked bathroom after she received 38 stab wounds and 54 "cutting wounds" to her face and body. Two days later, the suspect attempted to pawn two of the victim's gold rings, according to prosecutors.
Oklahoma authorities say the discovery was made near Rush Springs, where one of Athena Brownfield's reported caregivers, Ivon Adams, allegedly buried the child after beating her to death.
Brian Walshe was previously arrested on charges of misleading a police investigation after a broken knife and blood were reportedly found in the couple's suburban Boston home.
Witnesses reported seeing David Pena, then just 17 years old, and another man carrying what was believed to be Felicia McGuyer's body wrapped in a carpet out of their building around the time of her 2007 disappearance.
State officials have shifted the missing persons case of Athena Brownfield into a "recovery operation" after the arrests of the child's alleged caregivers, one of whom is charged with first-degree murder.
Eric Reinbold was convicted of stabbing his wife 27 times and leaving her body to be found by her son. A note found near Lissette Reinbold's body read, "Jesus, forgive me of my sins."
Jurors will be transferred from another county to decide whether Richard M. Allen is responsible for the 2017 murders of teenage friends Liberty German and Abigail Williams.
Mike Clardy is now charged with the murder of Deanna Howland, whose unidentified torso was found by a Missouri rest area maintenance worker nearly 20 years ago.
