Hillary Clinton again said that the FBI believed her email narrative to be "truthful" Wednesday, despite receiving the highest untruthfulness rating for that claim from several fact-checkers last week.

"As the FBI said, everything that I've said publicly has been consistent and truthful with what I've told them," Clinton told NBC News affiliate KUSA in an interview.

The former secretary of state said on numerous occasions she had neither sent nor received information "marked classified at the time." After a yearlong investigation into Clinton's use of a private email server, the FBI found that she had transmitted dozens of emails containing classified material, including some at the highest level of classification.

FBI director James Comey also said that Clinton was "negligent" and "extremely careless" in her handling of classified information.

"Any reasonable person in Secretary Clinton's position … should have known that an unclassified system was no place for that conversation," he said in a statement upon the completion of the investigation.

Clinton first claimed that the FBI confirmed her email narrative as "truthful" Sunday on Fox News.

"[FBI] Director Comey said my answers were truthful," Clinton said. "And what I've said is consistent with what I have told the American people, that there were decisions discussed and made to classify retroactively certain of the emails.