Justice Department Inspector General Michael Horowitz on Thursday released his long-awaited report detailing his review of the FBI and DOJ's Hillary Clinton investigation during the 2016 presidential election, finding then-FBI Director James Comey to be "insubordinate" with his public statements on the investigation.

For more than a year, Horowitz has been reviewing the agencies' actions related to its investigation into Clinton's use of a private email server while she was secretary of state.

Horowitz's investigation looked at a variety of allegations, including whether it was improper for Comey to make a public announcement about not recommending prosecution over the Clinton email arrangement.

"We found that it was extraordinary and insubordinate for Comey to conceal his intentions from his superiors, the Attorney General and Deputy Attorney General, for the admitted purpose of preventing them from telling him not to make the statement, and to instruct his subordinates in the FBI to do the same," Horowitz's report says.

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