Disappearance
Melissa Casias, 53, an administrative assistant at Los Alamos National Laboratory, was reported missing on June 26, 2025, after leaving her home in Ranchos de Taos, New Mexico. According to her family, she had dropped her husband off at work that morning before vanishing.
Discovery
A hiker discovered skeletal remains in the Carson National Forest, outside Taos, on May 28, 2026 — nearly a year after Casias disappeared. New Mexico State Police later confirmed the remains were hers and released the precise coordinates of the discovery site: 36.307880, -105.597170.
State Police also corrected two pieces of previously circulated information. A report that her remains had been found "slumped up against a tree" was incorrect, according to the agency. A private investigator's separate claim that the remains had been located two weeks earlier was likewise disputed by police.
Forensic findings
On June 1, 2026, forensic anthropologists examined the remains in an attempt to reconstruct the skull and determine whether fractures consistent with a cause of death were present. New Mexico State Police told Los Angeles Magazine that the resulting CT scan found no bullets or projectiles in the skull — despite a handgun having been recovered near the remains. Casias' family has stated that the handgun did not belong to her.
State Police were explicit that no conclusion has been drawn. "The New Mexico State Police is awaiting the Office of the Medical Investigator's official determination regarding the cause and manner of death before drawing any conclusions," the agency said, adding that investigators "continue to evaluate all possible causes and manners of death."
Los Angeles Magazine contributor Lauren Conlin, who has covered the case since Casias' disappearance, has said publicly that she never believed the case was a straightforward suicide, citing two items Casias took with her when she disappeared — her toothbrush and her thyroid medication — which Conlin has characterized as "things that might indicate you're planning to stay alive." This is Conlin's own interpretation of the evidence, not a conclusion reached by investigators.
Security clearance — on the record correction
Casias has been described in some coverage of the broader "missing scientists" pattern as having held a security clearance connected to classified research. Speaking on NewsNation's Elizabeth Vargas Reports, Morgan Wright, CEO of the National Center for Open and Unsolved Cases, stated on the record that this characterization does not hold up: Casias held an administrative role, and "the highest cleared she could have been would have been an L clearance and not access to any classified stuff."
Source note
Reporting drawn from Los Angeles Magazine (Lauren Conlin), including her June 19, 2026 video update and her appearance on NewsNation's Elizabeth Vargas Reports alongside Morgan Wright. Quotations from New Mexico State Police are sourced to Los Angeles Magazine's exclusive exchange with investigators, published June 2026. GPS coordinates and the June 1, 2026 forensic examination date are as released by New Mexico State Police.