The Hillary Clinton campaign is recruiting former prosecutors to go after and criticize FBI Director James Comey for deciding to reopen an investigation into Clinton's use of a private email server to handle official government business.

The campaign sent out letters to ex-prosecutors on Sunday, just two days after Comey informed Congress on Friday that the FBI had reopened the investigation after finding new emails related to the case during a separate probe into former disgraced congressman Anthony Weiner of New York.

The campaign is circulating a draft letter to the former federal prosecutors that criticizes Comey for moving ahead with an investigation without all the facts, the Daily Beast reported.

"It is out of our respect for such settled tenets of the United States Department of Justice that we are moved to express our concern with the recent letter issued by FBI Director James Comey to eight Congressional Committees," the letter reads.

The campaign's letter said Comey's "unprecedented decision to publicly comment on evidence in what may be an ongoing inquiry just eleven days before a presidential election leaves us both astonished and perplexed."

It said Comey's actions violated "longstanding Justice Department guidelines" for making public disclosures on investigations especially when it comes to politicians and the timing of elections.

"Director Comey's letter is inconsistent with the prevailing Department policy, and it breaks with longstanding practices followed by officials of both parties during past elections," the campaign's letter reads.

The Daily Beast obtained the letter from Elkan Abramowitz, who served formerly as chief of the criminal division of the U.S. Attorney for the Southern District of New York. Abramowitz agreed with the Clinton campaign, and said what Comey did was "outrageous."