BILLINGS, Mont. (AP) — Authorities say they believe a body found outside of Williston, N.D., is that of a missing Sidney, Mont., school teacher.

Montana authorities released a statement Wednesday saying they're trying to confirm that the remains are those of 43-year-old Sherry Arnold, who disappeared Jan. 7 during a morning run.

Two Colorado men have been arrested and charged with aggravated kidnapping in the case and face a possible death penalty if convicted.