Hillary Clinton did not hand over key work-related emails cited in scathing State Department report

A key email from Hillary Clinton to a top State Department aide in 2010 expressing worry that her personal messages could become "accessible" to outsiders is cited in a new inspector general's report on her emails. But Clinton did not turn over that particular email, which was later obtained by the investigators.

The presumptive Democratic presidential nominee was supposed to have turned over all work-related emails to the State Department for public release. That public release was supposedly completed at the end of February.

But the agency's watchdog found three emails never seen before by the public - including Clinton's explanation for why she wanted her emails kept private and details of hacking attempts on her personal computer server.

It is unclear how the agency found the emails, as Clinton's physical server is currently being investigated by the FBI. But the existence of the messages renews concerns that Clinton was not completely forthcoming when she turned over work-related emails to the State Department, which evidently found these emails only after releasing the documents Clinton herself provided in March 2015.

An inspector general's report released Wednesday on email practices within the State Department faulted Clinton and previous secretaries of state for poorly managing email and other computer information, and for slowly responding to new cybersecurity risks.

The report cites "longstanding, systemic weaknesses" related to communications that precede Clinton's appointment as secretary of state. The State Department singled out Clinton's failures as "more serious," however, according to the Associated Press.

"At a minimum, Secretary Clinton should have surrendered all emails dealing with department business before leaving government service and, 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 report reads.