The special counsel who spent four years investigating the Trump-Russia probe accused the FBI of acting negligently by opening the investigation based on vague and insufficient information in a sweeping 300-page report made public Monday.

Special counsel John Durham, named by then-Attorney General William Barr to examine the origins and conduct of the investigation into whether Donald Trump’s 2016 presidential campaign colluded with Russia, criticized the FBI at length in the report.

“The [Justice] Department and the FBI failed to uphold their important mission of strict fidelity to law,” the conclusion section of Durham’s report says. “Senior FBI personnel displayed a serious lack of analytical rigor toward the information they received, especially information received from politically affiliated persons or entities.”

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