THEODOSIA, Mo. (AP) —  The adoptive mother of an autistic 16-year-old girl whose burned remains were found on the rural Missouri property of her biological mother says her family is grieving.

Tamile Leckie-Montague, of Columbia Heights, Minnesota, released a statement Tuesday thanking Missouri investigators for their efforts in determining what happened to Savannah Leckie, who was reported missing last month.

Savannah had returned in the past year to live with her biological mother, Rebecca Ruud, and Ruud's husband on their remote property in southern Missouri. Investigators found the girl's remains on the property earlier this month and identified them as Savannah's on Monday.

Ruud was charged Tuesday with first-degree murder and other counts in the girl's death.

Ozark County Prosecutor John Garrabrant declined to say whether anyone else will be charged.

_____________

(previous version of story)

THEODOSIA, Mo. (AP) — Authorities have confirmed that burned human bones found on a rural southwest Missouri property are those of a missing 16-year-old girl.

Ozark County Sheriff Darrin Reed said Monday that the remains were identified as those of 16-year-old

. The teen was reported missing in late July from her home in Longrun, where she lived with her mother and her mother's boyfriend.

A search warrant says Leckie grew up with her adoptive mother in Minnesota but had resumed living with her biological mother within the last year.

The Ozark Radio Network reports that items taken during a search of the home and surrounding area included a meat grinder, a knife and 26 bottles of lye, which can be used to accelerate the breakdown of bodily tissue.

No criminal charges had been filed as of Tuesday morning.