A Pentagon investigation into leaks of classified and sensitive information has expanded to include two more aides to Defense Secretary Pete Hegseth and his deputy, officials said on Wednesday.

A third top Pentagon official was placed on administrative leave Wednesday in the fallout of a major leak of sensitive U.S. military intel via a group chat on Signal.

Colin Carroll, the chief of staff of Deputy Secretary of Defense Steve Feinberg, has been placed on administrative leave amid an ongoing investigation, two defense sources said Wednesday, the third such official to be placed on leave reported this week.