State Department officials produced 323 pages of correspondence from Hillary Clinton's tenure on Monday, including previously undisclosed emails between Clinton and top aide Huma Abedin that have since been classified.

The emails come on the heels of FBI Director James Comey's announcement late last week that his agents had uncovered new emails related to their closed investigation of Clinton and her staff. Those emails came from at least one laptop used by Abedin, which was obtained through a separate probe of her husband Anthony Weiner for the sexually charged messages he allegedly sent a minor.

Several of the emails were withheld from the State Department in Dec. 2014, when Clinton's lawyers turned over roughly 55,000 pages of hand-selected emails and, later, deleted an equal number they deemed personal in nature.

At least one of those was an email chain Clinton sent Abedin that was previously classified when the bulk of it was provided to the State Department. In it, Clinton asked Abedin to print a sensitive memo from informal advisor Sidney Blumenthal about the political situation in Northern Ireland.

The Clinton campaign has professed to know nothing of what could be contained in the thousands of emails that pushed the FBI to reopen its investigation of the former secretary of state.

But the latest emails, which Abedin turned over from her own archives in summer 2015, suggests Abedin's computer could contain additional correspondence between herself and the Democratic nominee.

"The three emails in question were all previously released and upgraded in the course of our monthly releases of 52,000 pages of former Secretary Clinton's emails which she provided us," said State Department spokesman Mark Toner. "They are near duplicates of documents previously released by the State Department over the past year. These emails were not marked classified at the time they were sent. As to whether emails were classified at the time they were sent, the State Department in the FOIA process is focusing on whether information needs to be protected today."

Clinton claimed Monday that the FBI has no case against her while her top campaign staff argued the FBI was improperly concealing a parallel investigation into Donald Trump's associates for their alleged ties to Russia.

The 323 pages of State Department documents were obtained by conservative-leaning Judicial Watch through the Freedom of Information Act.