Fox News chief intel correspondent Catherine Herridge revealed that “email from aide Huma Abedin to Mrs. Clinton that kickstarted the FBI probe contained classified information from three intelligence agencies: the DIA, the NSA and the NGA.”

Those three agencies are the Defense Intelligence Agency, National Security Agency and National Geospatial-Intelligence Agency.

Herridge, reporting on Fox News’ “America’s Newsroom” Tuesday stated, “All three agencies have confirmed the intelligence was classified when it was sent three years ago and remains classified to this day.”

Catherine Herridge: One of the cardinal rules is that only the agency that gets the information has the authority to declassify that information, and that’s why the State Department and Mrs. Clinton and her team are in such deep trouble over these emails. Fox News confirming the email from aide Huma Abedin to Mrs. Clinton that kickstarted the FBI probe contained classified information from three intelligence agencies: the DIA, the NSA and the NGA, which overseas U.S. governments by satellite. All three agencies have confirmed the intelligence was classified when it was sent three years ago and remains classified to this day. But the State Department claims the intelligence was unclassified, even though they didn’t own it, and released the email — now simply stating there’s a difference of opinion. Hillary Clinton in clip: What you’re seeing now is a disagreement between agencies saying, ‘You know what? they should have,’ and the other saying, ‘No, they shouldn’t.’ That has nothing to do with me. Herridge: But under this executive order, 13526 signed by Mr. Obama in December 2009, only the three intelligence agencies who own that information in the first place have the authority to declassify it, not Mrs. Clinton and not the State Department.

WATCH:

Watch the latest video at video.foxnews.com

Follow Steve on Twitter