US President Donald Trump has ordered an investigation into the mysterious deaths and disappearances of nearly a dozen American scientists with access to some of the nation’s most closely guarded nuclear and space secrets.

The cases have fueled online speculation ranging from foreign espionage to a government cover-up of classified UFO research, reports RT online.

Speaking to reporters on Thursday, Trump stated that he “just came out of a meeting on this,” noting that “It’s pretty serious stuff.”

“I hope it’s random, but we’re going to know in the next week and a half. Some of them were very important people, and we’re going to look at it over the next short period,” the president said.

Since 2023, at least ten individuals with ties to advanced research have died or vanished under puzzling circumstances.

Reports of at least 11 deaths and disappearances involving experts in space, defense, and nuclear fields have circulated this month, prompting speculation within the scientific community. Authorities have not confirmed any official connection among the cases.