Diane Marie Butler was 60 years old when she disappeared from Anaconda, Montana, on July 11, 2024. The female resident was last known to be in Anaconda before reportedly leaving with a friend with plans to travel to nearby Butte. What happened after that departure has never been publicly established. Butler did not return to her normal contacts, and no confirmed communication from her has been reported since she left.
Her disappearance was subsequently classified as an endangered missing-person case, reflecting concerns that went beyond an unexplained absence and raised questions about her safety and ability to care for herself. Public descriptions identify Butler as a white woman standing approximately 5 feet 6 inches tall and weighing about 170 pounds, with brown hair and green eyes.
Identifying Diane can be complicated because she has reportedly used several variations of her name. She may spell her first name as Diana or Dianne and has been associated with the surnames Niacaric, Niacaris and Palmer in addition to Butler. She also has tattoos that could help distinguish her, including a tattoo on her shoulder and reportedly three or four names tattooed on her back. Authorities and missing-person advocates have also noted significant medical vulnerabilities. Butler has a documented history of mental illness and requires antipsychotic medication, and published case information also notes a history of problems involving drugs and alcohol. Those circumstances have added urgency to the effort to locate her, particularly because an extended period without appropriate medication could leave her increasingly vulnerable or unable to seek assistance on her own.
The last known movement in Diane's story remains the reported trip from Anaconda toward Butte with a friend. Publicly released information has not identified that friend, described the vehicle involved, specified where in Butte she intended to go, or explained whether investigators were able to verify that she actually arrived there. There have also been no publicly documented subsequent sightings or communications that establish where she went after leaving Anaconda. With so few details available about the hours surrounding her disappearance, investigators have been left with a narrow timeline and a considerable gap between her last known presence in Anaconda and whatever happened afterward. The Montana Missing Persons Clearinghouse is identified as the investigating agency for the case, and Butler continues to be publicly listed as missing.
Diane's disappearance remains especially troubling because an apparently ordinary trip between two Montana communities became the dividing line between her known life and a prolonged absence. There is no publicly reported explanation for why she vanished, no confirmed account establishing what happened once she left with her friend, and no publicly announced resolution to the case. Her alternate names, tattoos, physical description and medical needs remain important identifying information should someone recognize her or recall an encounter that was not understood to be significant at the time. At its core, the case of Diane Marie Butler is the unresolved disappearance of a vulnerable 60-year-old woman who was last seen in Anaconda on July 11, 2024, reportedly headed toward Butte with a friend, and who has not been heard from since, leaving behind a continuing search for answers about where she went and what happened to her.Last Seen: Jul 11, 2024
