FBI will look for connections to deaths and disappearances of scientists

Nbcwashington · Apr 20, 2026 · 872 words · By Michael Kosnar; Andrew Blankstein; Justin Goldman; Corky Siemaszko; NBC News

Government Secrecy/Conspiracy National Security Investigations

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What to know about Government Secrecy/Conspiracy

The FBI said Monday that it would lead an effort to hunt for any possible connections between the seemingly unrelated deaths or disappearances of at least 10 scientists and government workers over the past few years.

Claims checked 17

Techniques found 3

Topics 2

Coverage spectrum

Coverage gap: Low Left coverage

Left0%

Center50%

Right50%

2 sources compared across this story cluster. This is an eFinder estimate from indexed source coverage, not an editorial rating.

What happened

Why it matters

The decision comes after online speculation and internet theories linking the deaths caught the attention of President Donald Trump, who said late last week that he’d just left a meeting where the fate of these scientists and workers had been discussed.

Common ground

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Perspective signals

The tension in the story is sharpened by Loaded Language, Repetition, Glittering Generalities: language that can make the dispute feel more urgent, personal, or adversarial than the underlying facts alone.

Follow-up questions

What new context would change how readers understand this Government Secrecy/Conspiracy story?
What evidence would most clearly confirm or weaken the claim that NASA said in a post on X that it was cooperating with the investigation, but "at this time, nothing related to NASA indicates a national security threat."?
How does this story connect Government Secrecy/Conspiracy with National Security Investigations over the next few days?

open_in_new Read the original article: https://www.nbcwashington.com/news/national-international/fbi-will-look-connecti…

psychologyPropaganda Techniques Detected

eFinder identified 3 propaganda techniques in this article. These signals explain how wording, emphasis, or missing context can shape a reader's interpretation.

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Loaded Language 80% confidence

Using words with strong emotional connotations to influence an audience.

Found in this article: eFinder flagged this technique because the story's framing or source language may guide readers toward a particular interpretation. Review the claim checks and evidence below to separate what is directly supported from what is implied by wording or emphasis.

Why it matters: Recognizing loaded language helps readers compare the article's framing with the underlying facts and with coverage from other sources.

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Repetition 60% confidence

Repeating a message until it is accepted as truth.

Why it matters: Recognizing repetition helps readers compare the article's framing with the underlying facts and with coverage from other sources.

warning

Glittering Generalities 70% confidence

Using vague, emotionally appealing phrases ('freedom', 'justice') without specifics.

Why it matters: Recognizing glittering generalities helps readers compare the article's framing with the underlying facts and with coverage from other sources.

fact_checkClaims Checked

eFinder analyzed this article and checked 17 claims against available evidence, cross-references, web search, and Wikipedia. Here is what the fact-checking layer found.

schedule Pending 7

check_circle Corroborated 5

info Single Source 3

help Insufficient Evidence 2

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Claim 1: “NASA said in a post on X that it was cooperating with the investigation, but "at this time, nothing related to NASA indicates a national security threat."”

SINGLE SOURCE

The evidence provides general, recent-looking links to NASA news (dated 2026), but there is no specific evidence found confirming that NASA issued a statement on 'X' (Twitter) stating that it is cooperating with an investigation but that 'nothing related to NASA indicates a national security threat.'

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web search NEUTRAL — NASA's first orbital spaceflight was conducted by John Glenn on February 20, 1962, in the Friendship 7, making three full orbits before reentering. Glenn had to fly parts of his final two orbits manua…
https://en.wikipedia.org/wiki/NASA

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web search NEUTRAL — Apr 6, 2026 · NASA.gov brings you the latest news, images and videos from America's space agency, pioneering the future in space exploration, scientific discovery and aeronautics research.
https://www.nasa.gov/

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web search NEUTRAL — Mar 24, 2026 · Reuters.com is your online source for the latest NASA news stories and current events, ensuring our readers up to date with any breaking news developments
https://www.reuters.com/technology/space/nasa/

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Claim 2: “McCasland, according to the Bernalillo County Sheriff’s Office, had donned hiking boots and appeared to have taken his wallet and a .38 caliber revolver with a leather holster before he took off.”

CORROBORATED

Two distinct web search results from the Bernalillo County Sheriff's Office confirm details about McCasland's appearance when he went missing, specifically mentioning the sheriff's office's reports regarding his gear and the investigation.

travel_explore

web search NEUTRAL — The Bernalillo County Sheriff’s Office (BCSO) continues the missing person investigation into the disappearance of 68-year-old William “Neil” McCasland, last known to have been at or near his residenc…
https://thedebrief.org/sheriffs-office-issues-update-on-miss…

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web search NEUTRAL — The Bernalillo County Sheriff’s Office in New Mexico has released a detailed timeline around the mysterious disappearance of 68-year-old William “Neil” McCasland, “last known to have been at or near h…
https://www.mensjournal.com/news/william-neil-mccasland-miss…

travel_explore

web search NEUTRAL — The sheriff's office reports the former major general has an unspecified "medical issue," adding urgency to the situation.McCasland stands 5-foot-11 and weighs approximately 160 pounds. He has white h…
https://www.themirror.com/news/us-news/air-force-general-ufo…

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Claim 3: “Since 2022, at least 10 scientists with ties to sensitive government projects, including the nation’s nuclear programs, NASA or other sensitive topics have died or disappeared.”

CORROBORATED

Multiple web search results reference the claim that 'Since 2022' or 'Since 2023,' there have been reports of 10 scientists connected to nuclear or space secrets who have died or disappeared. This theme is present across multiple search snippets.

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wikipedia NEUTRAL — NASA spin-off technologies are commercial products and services which have been developed with the help of NASA, through research and development contracts, such as Small Business Innovation Research …
https://en.wikipedia.org/wiki/NASA_spin-off_technologies

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wikipedia NEUTRAL — The National Aeronautics and Space Administration (NASA ) is an independent agency of the U.S. federal government responsible for the United States' civil space program and for research in aeronautics…
https://en.wikipedia.org/wiki/NASA

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wikipedia NEUTRAL — NASA Astronaut Group 10 (nicknamed "The Maggots") was a group of 17 astronauts that were announced on May 23, 1984 and consisted of seven pilots and ten mission specialists. Although selected in 1984,…
https://en.wikipedia.org/wiki/NASA_Astronaut_Group_10

+ 3 more evidence sources

schedule

Claim 4: “Neves Valente died by suicide.”

PENDING

This claim was extracted as a checkable statement from the article. eFinder labels it pending based on the available evidence and source context shown below.

schedule

Claim 5: “The Department of Justice has not divulged a motive for why Neves Valente targeted Brown University, where he had been a graduate student, or Loureiro.”

PENDING

This claim was extracted as a checkable statement from the article. eFinder labels it pending based on the available evidence and source context shown below.

schedule

Claim 6: “Online theorists also tried to link a case that appears to have already been solved, the killing of 47-year-old Massachusetts Institute of Technology physics professor Nuno Loureiro.”

PENDING

This claim was extracted as a checkable statement from the article. eFinder labels it pending based on the available evidence and source context shown below.

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Claim 7: “The FBI said Monday it would work with “the Department of Energy, Department of War, and with our state and state and local law enforcement partners to find answers.””

CORROBORATED

One web search result directly quotes the statement: 'The FBI said Monday it would work with “the Department of Energy, Department of War, and with our state and state and local law enforcement partners to find answers.”' This statement is reported in the evidence, suggesting corroboration from the context of the search results, although only one source is explicitly cited for the quote itself.

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wikipedia NEUTRAL — The Department of Government Efficiency (DOGE) is an initiative by the second Trump administration in the United States. It was first suggested to Donald Trump by Elon Musk in 2024, and was officially…
https://en.wikipedia.org/wiki/Department_of_Government_Effic…

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wikipedia NEUTRAL — Federal holidays in the United States are 11 calendar dates designated by the U.S. federal government as holidays. On these days non-essential U.S. federal government offices are closed and federal em…
https://en.wikipedia.org/wiki/Federal_holidays_in_the_United…

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wikipedia NEUTRAL — The United States House Oversight Committee investigation into the Biden family is an ongoing investigation since January 2023 by the United States House of Representatives into U.S. President Joe Bid…
https://en.wikipedia.org/wiki/United_States_House_Oversight_…

+ 3 more evidence sources

info

Claim 8: “The FBI said Monday that it would lead an effort to hunt for any possible connections between the seemingly unrelated deaths or disappearances of at least 10 scientists and government workers over the past few years.”

SINGLE SOURCE

The web search results mention speculation about '10 government workers tied to nuclear or space technology' and the FBI's involvement, but none of the provided evidence confirms that the FBI specifically announced on a 'Monday' that it would lead an effort to hunt for connections between at least 10 such individuals. The evidence is suggestive but lacks the specific confirmation of the announcement date and scope.

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wikipedia NEUTRAL — FBI is an American crime drama television series created by Dick Wolf and Craig Turk that premiered on CBS on September 25, 2018. FBI received a straight-to-series commission for 13 episodes on Septem…
https://en.wikipedia.org/wiki/List_of_FBI_episodes

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wikipedia NEUTRAL — The third and final season of the Fox American television psychological thriller series The Following premiered on March 2, 2015 and concluded on May 18, 2015 with a total of 15 episodes.
https://en.wikipedia.org/wiki/The_Following_season_3

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wikipedia NEUTRAL — FBI is an American police procedural television series created by Dick Wolf and Craig Turk that premiered on CBS on September 25, 2018. The series is produced by Wolf Entertainment, CBS Studios and Un…
https://en.wikipedia.org/wiki/FBI_(TV_series)

+ 3 more evidence sources

schedule

Claim 9: “The 29-year-old suspect is being held pending an arraignment that was postponed until the end of April.”

PENDING

This claim was extracted as a checkable statement from the article. eFinder labels it pending based on the available evidence and source context shown below.

help

Claim 10: “The same agency also investigated the death of renowned Caltech scientist Carl Johann Grillmair, who was fatally shot on Feb. 16.”

INSUFFICIENT EVIDENCE

No evidence was gathered for this claim, and the evidence count confirms no relevant information was found in the search results or Wikipedia.

schedule

Claim 11: “Loureiro was gunned down in December by suspected Brown University mass shooter Claudio Manuel Neves Valente, police have said, who two days later opened fire at Brown University.”

PENDING

This claim was extracted as a checkable statement from the article. eFinder labels it pending based on the available evidence and source context shown below.

info

Claim 12: “Also Monday, the House Oversight committee said it would conduct its own investigation, formally asking for a briefing from the Defense Department, Energy, FBI and NASA on the “disappearance and death of individuals with access to sensitive U.S. scientific information.””

SINGLE SOURCE

The evidence provided contains general information about the House Oversight Committee's investigations (e.g., into the Biden family), but none of the provided search results or Wikipedia entries confirm the specific announcement made on 'Monday' regarding a formal request for briefings from the Defense Department, Energy, FBI, and NASA concerning the disappearance and death of individuals with access to sensitive U.S. scientific information.

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wikipedia NEUTRAL — The Golden Dome is a planned multi-layer missile defense system for the United States, intended to detect and destroy ballistic, hypersonic, and cruise missiles before they launch or during their flig…
https://en.wikipedia.org/wiki/Golden_Dome_(missile_defense_s…

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wikipedia NEUTRAL — In 2003, friends and associates of American financier Jeffrey Epstein—who would later, in 2008, be convicted of sexual offenses against minors—gave him a three-volume bound album with personalized gre…
https://en.wikipedia.org/wiki/Jeffrey_Epstein's_birthday_boo…

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+ 3 more evidence sources

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Claim 13: “Rep. Tim Burchett, R-Tenn., said in the days after McCasland went missing that U.S. intelligence agencies had stymied his attempts to find out what happened to the retired Air Force general and several other prominent scientists and researchers in the U.S. who disappeared under mysterious circumstances.”

CORROBORATED

Two separate web search results reference Representative Tim Burchett discussing the lack of transparency regarding General McCasland and other missing scientists, indicating this claim is reported by multiple independent sources.

travel_explore

web search NEUTRAL — For crying out loud, there was a general involved," one individual commented, referencing Air Force General William Neil McCasland, who vanished on February 27. McCasland's disappearance sparked numer…
https://www.themirror.com/news/us-news/white-house-breaks-si…

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web search NEUTRAL — Representative Tim Burchett.
https://www.congress.gov/member/tim-burchett/B001309

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web search NEUTRAL — Tim Burchett, a Republican who has pushed for more government transparency surrounding space intelligence and UFOs, told the Daily Mail in March.
https://www.yahoo.com/news/articles/trump-says-hell-pretty-g…

help

Claim 14: “Another case that fueled speculation was the disappearance of Monica Reza, a 60-year-old former NASA scientist and rocket materials expert who was reported missing June 22, 2025, while hiking in the Angeles National Forest.”

INSUFFICIENT EVIDENCE

No evidence was gathered for this claim, and the evidence count confirms no relevant information was found in the search results or Wikipedia.

schedule

Claim 15: “The oldest of the cases that has churned-up questions appears to be that of Alabama-based anti-gravity researcher Amy Catherine Eskridge, whose death at age 34 in 2022 was ruled a suicide.”

PENDING

This claim was extracted as a checkable statement from the article. eFinder labels it pending based on the available evidence and source context shown below.

schedule

Claim 16: “A suspect has been arrested who had a prior arrest for alleged intentional discharge of a rifle but no motive has been released, which only added tinder to the theories.”

PENDING

This claim was extracted as a checkable statement from the article. eFinder labels it pending based on the available evidence and source context shown below.

check_circle

Claim 17: “These discussions, coupled with calls for government action, have been accelerating on Reddit and other social media sites since February, when 68-year-old retired Air Force Maj. Gen. Neil McCasland disappeared from his home in New Mexico.”

CORROBORATED

One web search result explicitly states that discussions and calls for government action have been accelerating on Reddit and other social media sites since February, following the disappearance of 68-year-old retired Air Force Maj. Gen. Neil McCasland. This links the social media acceleration to the specific event.

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wikipedia NEUTRAL — The Air Force Intelligence, Surveillance and Reconnaissance Agency (Air Force ISR Agency or AFISRA) was until 29 September 2014 a field operating agency of the United States Air Force headquartered at…
https://en.wikipedia.org/wiki/Air_Force_Intelligence,_Survei…

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wikipedia NEUTRAL — The Egyptian Air Force (EAF) (Egyptian Arabic: القوات الجوية المصرية, romanized: El Qūwāt El Gawīyä El Maṣrīya) is the aviation branch of the Egyptian Armed Forces that is responsible for all airborne…
https://en.wikipedia.org/wiki/Egyptian_Air_Force

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wikipedia NEUTRAL — The Air Corps (Irish: An tAerchór) is the air force of Ireland. Organisationally a military branch of the Defence Forces of Ireland, the Air Corps utilises a fleet of fixed-wing aircraft and rotorcraf…
https://en.wikipedia.org/wiki/Irish_Air_Corps

+ 3 more evidence sources

info Disclaimer: This analysis is generated by AI and should be used as a starting point for critical thinking, not as definitive truth. Claims are verified against publicly available sources. Always consult the original article and additional sources for complete context.