"We are deeply saddened to have to report an update in the Savannah Leckie case," reads a Thursday morning Facebook post from Missing Children Minnesota.
Authorities in Missouri, the post goes on to say, found "yet-unidentified human remains on the property where Savannah disappeared."
The 16-year-old Leckie went missing from her family farm in Ozark County last month, and authorities initially believed she might have run away to Minnesota, where she lived until moving to Missouri recently.
But on Wednesday, investigators found "burned skeletal remains" while executing a search warrant at Leckie's home, the Ozark County Times says.
The paper notes that the bones were discovered in a burn pile some 400 yards away from the house, with the local sheriff saying "officers found several cigarette butts around the burn pile, as if whoever was responsible sat there a long time while smoking."
As KARE 11 notes, Leckie's biological mother (who owns the Ozark County property where the remains were found, and reported the 16-year-old missing last month) set up a GoFundMe page to raise money for "legal council," saying that she's being investigated over the disappearance.
That GoFundMe account is no longer available.
Authorities are working to identify the remains now.