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Remains of Missing Los Alamos Employee Melissa Casias Identified

Forensic testing of the recovered handgun will inform an FBI and congressional review into a cluster of scientists' unexplained deaths and disappearances.

Overview

  • New Mexico State Police said human remains found in Carson National Forest have been identified as Melissa Casias, a Los Alamos National Laboratory employee who vanished in June 2025.
  • Investigators reported a handgun was located next to the remains and the Office of the Medical Investigator has not yet determined cause or manner of death.
  • The New Mexico probe is collecting forensic evidence and tracing the firearm to establish whether the weapon belonged to Casias or someone else.
  • The FBI opened a broader review earlier this year to look for connections among roughly 10–11 scientists and government researchers tied to nuclear or aerospace work, and the House Oversight Committee has sought agency records.
  • Families and some private investigators have urged caution about conspiracy theories, noting personal and security-clearance issues in some cases while officials say forensic results and federal inquiries will be needed to clarify any links.