The New York Times says it has learned that the FBI investigated one of its reporters, Elizabeth Williamson, after she wrote about its agents being assigned to protect and transport the girlfriend of that agency's director, Kash Patel.

New FBI Director Kash Patel was sworn in Monday as acting chief of the federal bureau of Alcohol, Tobacco, Firearms and Explosives, taking the helm of two separate and sprawling Justice Department agencies, according to a person familiar with the matter.