An audit by the State Department inspector general has concluded that former Secretary of State Hillary Clinton violated her agency's own records policy by withholding all of her government-related communications.

"Secretary Clinton should have preserved any federal records she created and received on her personal account by printing and filing those records ... because she did not do so, she did not comply with the department's policies that were implemented in accordance with the Federal Records Act," the watchdog report said, according to an excerpt in Politico.

Clinton has faced multiple investigations into her use of a private server to shield her official emails, including an FBI probe and an internal State Department review.

The inspector general report, which was provided to lawmakers Wednesday, contradicts Clinton's longstanding claim that her personal email network did not break any rules that were on the books at the time.