President Donald Trump said Monday that his administration is on the hunt for an administration official who last week shared information with media outlets about a U.S. military airman who was stranded in Iran after his fighter jet went down over enemy airspace.

During a press conference at the White House, the president also threatened to jail the reporter who spoke with U.S. officials about the story.

“We think we’ll be able to find it out, because we’re going to go to the media company that released it, and we’re going to say, ‘National security. Give it up or go to jail,’” Trump said.

“The person that did the story will go to jail if he doesn’t say,” Trump added. “And that doesn’t last long. I think everybody would understand it.”

This is a developing story and will be updated.