FBI investigates suspicious disappearances of scientists tied to classified research

TL;DR

Eight US scientists linked to classified programs died or vanished in three years, a statistical cluster the FBI says cannot be treated as isolated cases.

Key Points

• 1.Six recent cases form the suspicious cluster. Anthony Chavez (Los Alamos, vanished May 2025), Monica Reza (NASA/JPL aerospace engineer, missing June 2025), Melissa Casias (Los Alamos admin with security clearance, vanished June 2025), MIT fusion director Nuno Loureiro (shot December 2025), Caltech astrophysicist Carl Grillmair (shot February 2026), and retired Air Force Major General William McCasland (disappeared February 2026, took a revolver and hiking boots).
• 2.Two older JPL deaths add to the pattern. Michael David Hicks died July 2023 aged 59 and Frank Maiwald died July 2024 aged 61, both longtime NASA JPL researchers whose causes of death were never publicly released.
• 3.The FBI says these cases cannot be examined in isolation. Former FBI assistant director Chris Swecker publicly stated the pattern deserves serious attention and that investigators cannot compartmentalize them as individual missing-person cases.
• 4.Statistical analysis suggests the cluster is genuinely unlikely. Estimating 20,000 people in relevant classified research roles and an adult disappearance rate of ~1 in 100,000 per year, the probability of four disappearances plus two homicides in this period is roughly 1 in 100,000.
• 5.No clear connecting thread makes a targeted conspiracy implausible. The victims worked across unrelated fields — nuclear imaging, plasma physics, exoplanets, materials science, and administration — with identified shooters in both homicide cases and personal-stress factors in at least one disappearance, leading the analyst to favor mundane explanations over coordinated foul play.