Ruiz was arrested July 5 on a murder complaint. He and Massey are being held without bail in the Oklahoma County jail.
Neither District Attorney David Prater nor Bethany Police Chief Phil Cole would comment Monday on charges being filed in the case.
Massey, while jailed on drug charges, shared details of the slaying with two detainees, according to a probable cause affidavit filed with his murder charge.
He told the first detainee that he participated in the homicide and said “they cut the girl's arms and legs off,” the lieutenant wrote in the affidavit.
The second detainee told police Massey “gave handwritten statements in the form of passed notes” describing what parts of the woman's body were dismembered and “perhaps more importantly,” how the body was wrapped before disposal,” the lieutenant wrote.
“Those same notes have been compared to known samples of Jimmy Massey's hand writing and appear to be from the same person on initial examination,” Jencks wrote.
Downour, who told investigators she left the residence on S Harvey shortly after Saunders and Hanshaw arrived, said Massey, who she also knew as “Country,” was there when she left, according to Massey's affidavit.
A confidential witness told police she was kidnapped and forced to watch as members of a human trafficking ring tortured and killed Saunders to send a message to others to cooperate with their illegal activities.
Neither prosecutors nor police would comment on that aspect of the killing.
According to court records, Massey admitted to kidnapping a woman and making her watch as Saunders was tortured and killed Oct. 9. Massey also described how Saunders' body was dismembered and left in a field behind the Homeland grocery store at NW 23 and Rockwell Avenue.