Adversaries May Be Linked to Missing U.S. Scientists, Lawmaker Claims as Federal Investigation Expands
Concerns are growing in Washington after a U.S. lawmaker suggested that foreign adversaries could be connected to the disappearance and deaths of more than 10 American scientists in recent years. The cases are now under federal review as questions mount over possible links to national security and sensitive research programs.
Lawmaker points to possible foreign involvement
Rep. Eric Burlison (R-Mo.), a member of the House Oversight Committee, told NewsNation that countries such as China, Russia, and Iran could potentially be involved.
“I would not be surprised if our adversaries… saw an opportunity to take out some of our nation’s top scientists,” Burlison said, adding that researchers working on advanced technologies may be particularly vulnerable due to limited security protection.
He also warned that scientists tied to sensitive government projects could be “easy targets” because they typically do not have personal security details.
Federal investigation underway
The House Oversight Committee has launched an investigation into the series of disappearances and deaths involving researchers with connections to aerospace, defense, and advanced materials programs.
The FBI confirmed it is actively reviewing the cases.
“The FBI is spearheading the effort to look for connections into the missing and deceased scientists,” the agency said, noting cooperation with federal and local partners.
Notable cases under review
Among the individuals being examined is Monica Jacinto Reza, 60, a materials science researcher linked to Aerojet Rocketdyne. She was last seen in 2025 after going hiking in Los Angeles. Authorities have said there are currently no confirmed signs of foul play, though the investigation remains open.
Another case drawing attention is retired Air Force Maj. Gen. William McCasland, who previously worked on classified programs connected to unidentified aerial phenomena (UAPs). His disappearance has fueled public speculation, though officials have released limited details.
Separately, scientist Amy Eskridge, 34, was reported to have died by suicide in 2022. Her family has acknowledged the official determination.
Public attention and political interest grow
The unusual cluster of cases has recently attracted attention from political leaders, including President Donald Trump, who said federal officials are reviewing the situation and expect more information in the coming weeks.
Some of the cases involve individuals with ties to government or defense-related research, adding to concerns about whether sensitive scientific work could be a factor.
Ongoing uncertainty
At this stage, officials have not confirmed any common cause linking the incidents. Investigations remain active, and authorities continue to evaluate all possibilities as public speculation grows.
For now, federal agencies stress that there is no verified evidence connecting the cases to any single explanation, foreign or otherwise, while efforts continue to locate missing individuals and determine the circumstances behind each case.