New evidence discovered near the skeletal remains of a missing nuclear lab assistant is casting doubt on the initial investigation and challenging the theory of suicide.
Melissa Casias, an administrative assistant at Los Alamos National Laboratory, vanished on June 26, 2025. Her remains were found 11 months later, on May 28, 2026, in New Mexico's Carson National Forest. A handgun was found near her remains, but the New Mexico State Police have not released details about its ownership, whether it was fired, or if fingerprints were found.
David Adams, an attorney for the Casias family, told the Daily Mail that an independent search of the crime scene in late June uncovered bones, torn and bloody clothing, orange peels, and strands of hair that were not collected by police. The family, who believe Casias did not commit suicide and had no reason to disappear, hired their own investigators after observing "red flags" in the official handling of the case.
"There seemed to be a separate narrative taking place that somehow she wanted to be missing and that she had other places that she would be," Adams stated. The hair found at the scene appeared to be horse hair, leading Adams to theorize that Casias's body may have been transported to the location. The family and volunteers also found shredded paper believed to be in Casias's handwriting and a tobacco pouch, despite her not using tobacco.
Casias left her home without her purse, keys, or wallet, and her cell phones, which had been reset to factory settings, were left behind. A drop of blood was also reportedly found inside the home.
Adams criticized the initial police investigation, suggesting that mishandling of the scene could compromise any future prosecution if foul play is confirmed. "In my mind, when you see that, you kind of go, okay, well, I could see that you would need a horse to get her up there if you were moving a body, for instance, because how you would otherwise do that," Adams said.
Casias's disappearance is one of several similar cases involving individuals with ties to New Mexico's nuclear weapons facilities. Other missing individuals include Anthony Chavez, a retired Los Alamos National Laboratory employee; Steven Garcia, a government contractor for the Kansas City National Security Campus; and retired Air Force General William Neil McCasland, who previously headed the Air Force Research Lab. These cases, along with some deaths among NASA scientists, have led to discussions about potential connections.
The FBI has stated it is investigating potential links between these cases and is collaborating with the Department of Energy, Department of War, and state and local law enforcement. However, Adams stated that his firm has had no contact with the FBI regarding the Casias case. The Office of the Medical Investigator has not yet released an official cause of death.