Mysterious Deaths Of California Scientists Raise Alarm

The Federal Bureau of Investigation said on April 21 that it is leading a review of at least 10 deaths and disappearances involving scientists and staff tied to sensitive nuclear or space work. (cbsnews.com) The bureau said it is “spearheading the effort” with the Department of Energy, the Department of War, and state and local law enforcement partners. (cbsnews.com) House Oversight Committee Chairman James Comer and subcommittee chairman Eric Burlison opened a parallel congressional inquiry on April 20 and asked the Federal Bureau of Investigation, the Department of Energy, NASA and the Pentagon for briefings. (oversight.house.gov) Their letters cited public reports about at least 10 people connected to “nuclear secrets or rocket technology” who died or vanished in recent years, starting with former NASA Jet Propulsion Laboratory scientist Michael David Hicks in July 2023. (oversight.house.gov) Southern California appears repeatedly in the list. NBC Los Angeles reported that four of the 10 cases involve local ties: Hicks, Jet Propulsion Laboratory scientist Frank Maiwald, missing Jet Propulsion Laboratory manager Monica Reza, and Caltech astrophysicist Carl Grillmair. (nbclosangeles.com) According to that report, Hicks died at 59 on July 30, 2023, Maiwald died at 61 on July 4, 2024, Reza disappeared during a hike near Mount Waterman on June 22, 2025, and Grillmair was fatally shot at 67 on his Antelope Valley porch in February 2026. (nbclosangeles.com) The cases are not one type of incident. CBS News reported that some are unsolved homicides, some are missing-person cases, and people close to several investigations say they do not see an established link. (cbsnews.com) CNN reported that NASA said it is cooperating with investigators and that “at this time, nothing related to NASA indicates a national security threat.” The same report said families in at least two cases pointed to medical issues or personal struggles rather than a coordinated plot. (yahoo.com) President Donald Trump said last week that he had discussed the cases in a meeting and called them “pretty serious stuff,” while adding that he hoped they were a coincidence. (cbsnews.com) (nbclosangeles.com) For now, the confirmed development is narrower than the online speculation: federal investigators are checking for connections, Congress wants answers, and authorities have not publicly shown that the cases are part of one operation. (cbsnews.com) (oversight.house.gov)