The State Department review of emails exchanged on Hillary Clinton Hillary Diane Rodham ClintonJoe Biden looks to expand election battleground into Trump country Biden leads Trump by 12 points among Catholic voters: poll The Hill's Campaign Report: Biden goes on offense MORE's private server has come across more than 60 emails that contained classified data, The Washington Times reports.

Two emails that included information recently deemed top secret by the intelligence community inspector general are not among those emails, according to the newspaper.

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The State Department has disclosed the classified emails on a rolling basis when explaining redactions to the thousands of pages of Clinton emails released over the past few months.

One email released in May had its classification upgraded at the request of the FBI, State Department spokeswoman Marie Harf said at the time. Twenty-five others were released in June, and portions of 37 in July.

Most of the over 60 emails flagged as sensitive contained information classified at the lowest level of "confidential," while one was deemed at the intermediate level of "secret," the Times reports.

The emails are among those reviewed and cleared for release under open-records requests through the end of July, meaning the figure is likely to grow.

The State Department is working through around 30,000 emails from Clinton's time as secretary of State, amid a federal probe into her user of a private server.

Clinton, now the Democratic presidential front-runner, maintained over the weekend during a campaign stop at the Iowa State Fair that she never exchanged classified emails.

This story was updated at 12:10 p.m.