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.

Sources familiar with the matter told ABC News that the search, carried out by the FBI, was related to allegations that Bolton is in possession of classified records.