Updated at 3:12 p.m. ET

The Justice Department inspector general has asked prosecutors in Washington, D.C., to examine whether former FBI Deputy Director Andrew McCabe should face criminal charges.

Inspector General Michael Horowitz has referred McCabe to the U.S. Attorney's Office for Washington, D.C., according to a source familiar with the matter. The source asked not to be identified as discussing the sensitive ongoing case.

Such referrals are not uncommon when the Justice Department IG has completed its work, but they don't automatically trigger any action. Prosecutors could try to prove that McCabe broke the law, or they could do nothing.

The U.S. Attorney's Office declined to comment. The Justice Department and its inspector general's office both declined to comment. Attorneys for McCabe made no comment.

Attorney General Jeff Sessions fired McCabe just short of his retirement last month after the IG concluded that McCabe had wrongly caused information to be released to The Wall Street Journal and then "lacked candor" about that afterward to investigators.

The prospect of criminal charges for McCabe follows months of political warfare over his tenure at the FBI. President Trump and his Republican allies have blasted McCabe, the FBI and the Justice Department over what they call "bias" and abuses of power that date back to before the 2016 presidential election.

McCabe's camp says he did nothing wrong — that he was within his rights as deputy director to authorize disclosures to the press and that he told the truth about the case.

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