According to Caddo County Jail records, Ivon Adams was booked just before 9 p.m. Thursday on multiple charges including first-degree murder.
Ivon Adams, the man who allegedly killed missing 4-year-old Athena Brownfield, was extradited to Oklahoma on Thursday.
 According to court documents obtained earlier this week, Brownfield was killed by Adams on Christmas Day and then buried in the Rush Springs area.
 Adams was arrested in Phoenix on January 12 on one count of first-degree murder and one count of child neglect.
 Adams’ wife, Alysia, was also arrested on January 12 and remains in the Caddo County Jail. Her bond was set at $500,000. Alysia is facing two counts of child neglect.
 It was discovered that Brownfield was missing when a postal carrier found her 5-year-old sister outside the Adams’ home in Cyril with no adult supervision on January 10. The postal carrier notified the Cyril Police Department, and that prompted the search for Brownfield’s whereabouts.
 Brownfield and her sister had been in the care of the Adams’ for about a year and a half to two years, according to court documents. Authorities have said the girls are related to Alysia.
 The biological parents of the sisters have been interviewed and are “cooperating with the investigation,” OSBI said on Monday.