Diane Marie Butler, 60, was last seen in Anaconda, Montana, on July 11, 2024, when she reportedly left town with a friend planning to travel to nearby Butte. Nothing has been publicly established about what happened after that departure. She did not return to her normal contacts and no confirmed communication has been reported since she left, and her case is classified as an endangered missing-person investigation.

Butler is described as a white woman about 5 feet 6 inches tall and 170 pounds, with brown hair and green eyes. She has used several name variations — Diane, Diana or Dianne — and has been associated with the surnames Niacaric, Niacaris, Palmer and Butler. Distinctive tattoos include one on her shoulder and reportedly three or four names on her back. She has documented mental illness and requires antipsychotic medication, and there is a history of problems with drugs and alcohol.

Public information does not identify the friend she left with, the vehicle involved, a destination in Butte, or any verified arrival or subsequent sightings. The Montana Missing Persons Clearinghouse is listed as the investigating agency and Butler remains missing. If anyone in Anaconda, Butte, or nearby areas remembers seeing her, or has information about the trip on July 11, 2024, please come forward.