Police Link Four Cases of Missing Scientists Through Firearms and Mysterious Connections
New police documents reveal a significant link between four unresolved cases involving missing or deceased individuals connected to sensitive U.S. research facilities. Each case features a firearm that was either purchased shortly before the disappearance, taken from the home, or found near a body. The latest development centers on Anthony "Tony" Chaves, a 78-year-old former employee of Los Alamos National Laboratory in New Mexico, who vanished on May 4, 2025. Chaves had purchased a 9mm handgun for self-defense but disappeared before collecting it. His disappearance is considered unusual by acquaintances who described him as healthy and mentally clear.
Investigations uncovered that prior to his disappearance, Chaves showed interest in artificial intelligence and quantum physics, reportedly discussing with an unidentified "lab scientist" the concept of existing in two places simultaneously. Chaves worked as an HVAC technician at Los Alamos until his retirement in 2017, with no confirmed involvement in classified projects. The mysterious "mentor" figure remains unidentified, and the nature of their relationship is unverified.
The other linked cases include retired Major General William Neil McCasland, who disappeared from Albuquerque on February 27, 2026, carrying a .38 caliber revolver; Stephen Garcia, a contractor connected to the National Security Campus in Kansas City, who vanished on August 28, 2025, also carrying a revolver; and Melissa Cassias, a 53-year-old administrative worker at Los Alamos, whose body was found on May 28, 2026, alongside a firearm of unknown ownership. In all cases, personal items like phones, wallets, and keys were left behind, raising public suspicion but no confirmed criminal connection.
Chaves’s childhood friend, Karl Backland, who reported his disappearance, believes Chaves’s case should be treated as a homicide, citing pressure from an unidentified individual to sell family property below value. Despite extensive searches and FBI involvement, no new leads have emerged, and the case was classified as inactive in October 2025. The White House announced in April that the FBI would investigate possible links among over ten such cases involving nuclear research, space, or defense sectors. President Donald Trump called the matter "very serious," but no public updates have confirmed any conspiracy or foul play.
Former FBI agent Ben Hansen expressed suspicion about the cases, suggesting a high likelihood of external involvement rather than mental health issues. However, no concrete evidence has been presented. The recurring presence of firearms, abandoned personal belongings, and ties to sensitive research facilities continue to fuel unanswered questions, especially with the addition of the enigmatic "lab scientist" connected to Chaves.
