WASHINGTON — A federal judge has dealt a setback to Justice Department efforts to seek a new indictment against former FBI Director James Comey , temporarily barring prosecutors from using evidence they had relied on when they initially secured criminal charges.

The ruling Saturday night from U.S. District Judge Colleen Kollar-Kotelly does not preclude the department from trying again soon to indict Comey, but it does suggest prosecutors may have to do so without citing communications between Comey and a close friend, Columbia University law professor Daniel Richman.

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