James Comey

The report found that the investigation was opened for a valid basis but that many significant errors were made.

The Justice Department has already decided that it won't prosecute Comey over the matter.

House Republicans interviewed James Comey behind closed doors Friday, hauling the former FBI director to Capitol Hill one final time before they cede power to Democrats in January.

But the report does not find evidence that Comey was motivated by political bias or preference in his decisions.

Cheney's office did not immediately return a phone message seeking comment Wednesday evening.

The White House says the search for a new FBI director will begin immediately.