Fox News chief intelligence correspondent Catherine Herridge reported this morning that three government agencies are now confirming that information contained in Hillary Clinton's private email was classified at the time it was sent.

Herridge said the classified information was in an email three years ago from Clinton aide Huma Abedin to the then-secretary of state, and the messages kickstarted the ongoing FBI probe of Clinton's email server.

The DIA, the NSA, and the NGA, which oversees U.S. government spy satellites, confirmed to Herridge that the information was classified at the time and remains classified now. 

The State Department, along with the Clinton team, have maintained that the information was not classified at the time, with Clinton characterizing the situation as a "disagreement" among agencies about what should be classified.

"That has nothing to do with me," Clinton said last week in Las Vegas.

Herridge noted that under an Obama executive order from 2009, the State Department cannot decide whether information from other agencies should be classified.

She said only the agency that obtains the information can decide whether to mark it as classified.

Watch her full report above to hear more on the new developments.