PHOENIX -- Arizona authorities say they have discovered the body of a woman believed to be the missing mother of a girl found dead in Louisiana.
Sheriff's officials say the possible remains of 31-year-old Suellen Roberts were found Monday in a remote area off Interstate 40 in northwestern Arizona.
Thomas Steven Sanders was arrested in Mississippi on Sunday in the kidnapping of Roberts' daughter, 12-year-old Lexis Roberts. The girl's skeleton was found by hunters last month in Louisiana.
Authorities say the trio had been spotted in northern Arizona over Labor Day weekend.
Sanders had been declared legally dead 16 years ago.