Shocking new details have emerged concerning the mysterious disappearance and death of a New Mexico woman who worked at a secretive US nuclear lab.
Authorities have revealed that Melissa Casias, whose body was discovered on May 28, was shot in the head at or around the time of her death, but it remains unclear if this was murder or a suicide. Her body was found well after her death.
Casias, an administrative assistant at the Los Alamos National Laboratory, vanished without a trace on June 26, 2025 after strangely walking out of her home without any identification, keys or way of contacting her.
Her skeletal remains were discovered 11 months later in Carson National Forest, propped up against a tree with a handgun near the body.
Melissa Casias worked at the Los Alamos National Laboratory, a long-running nuclear research facility, before disappearing on June 26 last year. Her remains were found on May 28
The newly released autopsy noted that the bullet was fired into the right side of Casias’s cranial base, hitting the bottom of the skull near the large hole where the spinal cord connects to the brain.
‘There’s no way this was suicide, not from that angle,’ the law enforcement source claimed, noting the reported position of the bullet when it entered Casias’s skull.
Casias’s work at LANL has raised fears that the administrative assistant may have been the target of a larger plot to steal classified government data on nuclear research or rocket technology.
Her disappearance has been linked to several other missing person cases in the Southwest, including a retired employee from LANL and former US Air Force General William Neil McCasland, who oversaw the military’s ties to research at the nuclear lab.