NASA joins multi-agency probe into deaths and disappearances of 11 scientists tied to nuclear and space research

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, April 21, 2026 
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NASA announced Monday that it is coordinating with federal agencies to investigate the deaths and disappearances of eleven scientists linked to nuclear and space research, a pattern of cases stretching back to 2022 that has drawn the attention of the White House, the FBI, and Congress.

NASA spokesperson Bethany Stephens posted on X that the agency "is coordinating and cooperating with the relevant agencies in relation to the missing scientists." She added that "nothing related to NASA indicates a national security threat" but said the agency "is committed to transparency and will provide more information as it becomes available."

Hours earlier, Fox News White House correspondent Peter Doocy pressed White House press secretary Karoline Leavitt on the matter. Leavitt later wrote on social media that the administration is taking the cases seriously. As Fox News Digital reported, the probe now involves multiple branches of the federal government.

The question at the center of all this is straightforward and unsettling: Were these scientists targeted for their work?

Eleven cases, no clear answers

At least eleven people connected to U.S. nuclear science, space research, or advanced defense work have died or vanished since 2022. The vast majority were involved in nuclear science and space research. Some had connections to the study of Unidentified Anomalous Phenomena, or UAPs.

Six of the eleven are dead. Michael David Hicks, 59, and Frank Maiwald, 61, both died between 2023 and 2026. Their causes of death remain unknown. The Washington Examiner identified both as NASA Jet Propulsion Laboratory scientists whose deaths were never publicly explained.

Nuno Loureiro, 47, was fatally shot at his Massachusetts home. Jason Thomas, 45, an associate director of chemical biology at Novartis, disappeared after walking from his home late at night. His body was found three months later in Lake Quannapowitt, Massachusetts.

Carl Grillmair, 47, was gunned down outside his home on February 16. A man named Freddy Snyder, 29, was subsequently charged with his murder. As we previously reported on the broader pattern of unexplained deaths among researchers, each new case has deepened concerns about whether these incidents share a common thread.

Amy Eskridge, a 34-year-old Huntsville, Alabama, based researcher and daughter of a retired NASA engineer, died on June 11, 2022, from what was classified as a self-inflicted gunshot wound. But Breitbart reported that Eskridge had publicly claimed in a 2020 interview that she faced harassment and threats connected to her work on experimental propulsion and "anti-gravity" technology before her death.

Five others remain missing: Monica Reza, 60; Melissa Casias, 53; Anthony Chavez, 79; Steven Garcia, 48; and William Neil McCasland, a 68-year-old retired Air Force major general. The Washington Examiner reported that Reza, a JPL director, vanished in June 2025 while hiking in California.

White House and Congress move in parallel

President Donald Trump told reporters outside the Oval Office on April 13 that he had just come from a meeting on the subject.

"I hope it's random, but we're going to know in the next week and a half."

Leavitt's public statement went further, framing the review as a direct extension of the president's priorities. She wrote on social media:

"In light of the recent and legitimate questions about these troubling cases, and President Trump's commitment to the truth, the White House is actively working with all relevant agencies and the FBI to holistically review all of the cases together and identify any potential patterns."

The Washington Times reported that multiple parts of the administration, including the FBI, the Pentagon, and the Department of Energy, are examining the eleven cases. The investigation spans institutions including NASA's Jet Propulsion Laboratory, MIT, Los Alamos National Laboratory, and private-sector research organizations, as Newsmax noted.

On the congressional side, House Oversight Committee Chairman James Comer, R-Ky., warned Sunday that the cases could involve "something sinister." He said his committee has already sent formal notices to the agencies most directly connected to the scientists' work.

Comer laid out the scope of congressional interest in blunt terms, as the New York Post reported:

"We've put a notice out to the Department of War, the FBI, NASA, and the Department of Energy. We want to know everything they know about what happened with these scientists, because those four agencies were predominantly the ones these 11 individuals were affiliated with."

Comer added that he plans to bring leaders from NASA, the FBI, and other federal agencies before Congress but sent letters first so as not to interfere with any potentially classified investigations. "We want to try to piece this together," he said.

A pattern without a proven link

No federal official has publicly confirmed that the eleven cases are connected. NASA says nothing in its review so far suggests a national security threat. Several experts cited in broader coverage have cautioned against assuming a conspiracy where coincidence may be the explanation.

But the sheer number of cases, and the sensitivity of the work these individuals performed, makes it hard to wave away the pattern. These were not random government employees. They were people who worked on nuclear weapons, advanced propulsion, space research, and classified defense programs. The fact that the House Oversight Committee is now pressing the FBI and multiple agencies for answers reflects a bipartisan recognition that the stakes are too high for institutional shrugs.

Consider the range of circumstances. One researcher was shot dead at home. Another's body turned up in a lake months after he vanished. A young scientist who said she was being threatened over her propulsion research died of what was ruled a self-inflicted wound. A retired Air Force major general simply disappeared. No two cases look alike, but that, in itself, does not rule out a common cause.

The administration has rightly ordered a coordinated review. The eleventh case to surface only reinforced the need for a serious, cross-agency investigation rather than siloed local inquiries that might miss the bigger picture.

What happens next

President Trump said the country would have answers within roughly a week and a half. Comer's committee is preparing to haul agency leaders before Congress. The FBI, the Pentagon, and the Department of Energy are all reportedly examining the cases.

Open questions remain. What specific evidence, if any, prompted officials to look for connections? Which cases, if any, do investigators believe are linked? What were the actual causes of death for Hicks and Maiwald? And why did it take years, and public pressure, for the federal government to look at these cases as a group?

NASA, for its part, continues to operate at full speed on other fronts, including its high-profile Artemis II mission. But the agency now faces questions that have nothing to do with rockets and everything to do with whether the people who built America's scientific edge are safe.

Eleven scientists. Six dead. Five missing. And for years, nobody in Washington thought to ask whether the dots connected. That silence is the first thing that deserves an explanation.

About Lynn Jenkins

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