White House Vows Probe Into Mysterious Deaths, Disappearances of Scientists

Administration says 'no stone will be unturned' in investigating troubling cases linked to classified information.

Apr. 17, 2026 at 11:38pm

Got story updates? Submit your updates here. ›

A moody, cinematic painting of a cluttered desk in a dimly lit government office, with a lone chair and a window casting warm, diagonal light across the scene, creating a sense of mystery and unease around the unexplained disappearances of scientists.The White House's investigation into the troubling cases of missing and deceased scientists with sensitive government knowledge aims to uncover any potential patterns or links.Los Alamos Today

The White House has announced it will investigate a series of unusual deaths and disappearances of American scientists with access to classified nuclear and aerospace material. Press Secretary Karoline Leavitt said the administration is working with federal agencies to identify any potential patterns or commonalities in these troubling cases.

Why it matters

The disappearances and deaths of scientists with sensitive government knowledge have raised national security concerns, prompting the White House to launch a comprehensive review. The investigations aim to determine if there are any established links between the cases and whether the scientists' access to classified information played a role.

The details

In the past two years, at least ten American scientists with ties to classified nuclear or aerospace programs have either gone missing or died under mysterious circumstances. This includes the recent disappearance of retired Air Force Maj. Gen. William 'Neil' McCasland, who was heavily involved in advanced aerospace research at the Pentagon. Other missing individuals include aerospace engineer Monica Jacinto Reza, government contractor Steven Garcia, and two employees from the Los Alamos National Laboratory.

  • On February 27, 2026, retired Air Force Maj. Gen. William 'Neil' McCasland disappeared from his home in Albuquerque, New Mexico.
  • In 2025, aerospace engineer Monica Jacinto Reza went missing during a hike.
  • In 2025, government contractor Steven Garcia disappeared after leaving his home.
  • In 2025, Melissa Casias, an administrative employee at the Los Alamos National Laboratory, went missing.
  • In 2025, Anthony Chavez, another Los Alamos National Laboratory employee, also went missing.

The players

Karoline Leavitt

The White House Press Secretary who announced the administration's investigation into the deaths and disappearances of the scientists.

William 'Neil' McCasland

A retired Air Force Maj. Gen. who was heavily involved in advanced aerospace research at the Pentagon and went missing from his home in Albuquerque, New Mexico on February 27, 2026.

Monica Jacinto Reza

An aerospace engineer who went missing during a hike in 2025.

Steven Garcia

A government contractor tied to the Kansas City National Security Campus who went missing after leaving his home in 2025.

Melissa Casias

An administrative employee at the Los Alamos National Laboratory who went missing in 2025.

Anthony Chavez

Another employee at the Los Alamos National Laboratory who went missing in 2025.

Got photos? Submit your photos here. ›

What they’re saying

“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 commonalities that may exist.”

— Karoline Leavitt, White House Press Secretary

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

— Donald Trump

What’s next

The White House has promised to provide updates on the investigation as more information becomes available.

The takeaway

The mysterious deaths and disappearances of scientists with access to classified government information have raised national security concerns, prompting a comprehensive White House investigation to determine if there are any established patterns or links between the cases.