The Justice Department is preparing criminal charges in connection with an Iranian hack that targeted Donald Trump’s presidential campaign. That's according to two people familiar with the matter who spoke on condition of anonymity Thursday. It's not immediately clear when the charges might be announced or whom precisely they will target. But they are the result of an FBI investigation into an intrusion that investigators across multiple agencies quickly linked to an Iranian effort to influence this year’s U.S. presidential election. The prospect of criminal charges comes as the Justice Department has raised alarms about aggressive efforts by countries including Russia and Iran to meddle in the election.