Author Ed Klein, known for his anti-Clinton books, says he has Justice Department sources who think Democratic presidential front-runner Hillary Clinton clearly broke the law by using a secret email account during her time as secretary of state.

Mr. Klein said it’s his understanding from his Justice Department and FBI sources “that they believe she’s guilty as sin.”

“I think we’re dealing with a very volatile situation on the Democratic side,” Mr. Klein said on “Tim Constantine’s Capitol Hill Show.” (To hear the full interview, click HERE.)

GOP presidential front-runner Donald Trump has already gotten some pushback for having lunch with Mr. Klein, the author of “Unlikeable: The Problem with Hillary” and “Blood Feud: The Clintons vs. The Obamas,” on Monday in Indiana as he begins pivoting into general election mode.

Mrs. Clinton told MSNBC this week the FBI has not contacted her to set up an interview in its investigation of her private email server.

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