President Trump told reporters Thursday that he had held a meeting concerning unconfirmed reports of missing nuclear scientists, describing the situation as "pretty serious stuff."

"I just left a meeting on that subject," Trump said when asked about the reports by members of the press. The president did not provide additional details about the meeting or elaborate on the nature of the reports.

Questions have emerged in the scientific community regarding unconfirmed reports about deaths and disappearances of various nuclear scientists, though specific details about these incidents remain unclear.

The president's comments represent the first official acknowledgment from the administration regarding these unconfirmed reports. No federal agencies have publicly confirmed investigations into missing scientists or provided details about any ongoing cases.

Trump did not specify which scientists were involved, the timeframe of the alleged incidents, or what actions the administration might take in response to the reports.