The FBI conducted a court-authorized search at John Bolton’s home as part of a national security investigation into whether he disclosed classified information in his 2020 book, according to two people familiar with the matter.

CIA Director John Ratcliffe provided FBI Director Patel the intelligence that was the basis of the search warrant, a source familiar with the matter told NBC News.

The FBI has searched the Maryland home and Washington office of ex-Trump national security adviser John Bolton as part of an investigation into the handling of classified information.