Dan Caldwell, a senior adviser to Defense Secretary Pete Hegseth, has been placed on administrative leave and was escorted out of the Pentagon by security on Tuesday, two defense officials said. The officials said Caldwell's sudden downfall was tied to an investigation into unauthorized disclosure of department information.

The Pentagon on Wednesday suspended a third high-ranking official as part of a major investigation into leaks of classified information. The secrets include an alleged briefing by businessman Elon Musk on China and the suspension of intelligence sharing with Ukraine,