Former Secretary of State Hillary Cinton's emails are under investigation again.

FOX's Rachel Sutherland reports from Washington:

Hillary Clinton and her staffers still have access to sensitive government information, but that could change.

The State Department has opened a formal investigation into whether the former Democratic Presidential nominee mishandled classified information when she was Secretary of State.

Depending on the outcome of the probe, Clinton and her aides could lose their security clearances. The State Department has not said when its probe began.

In Washington, Rachel Sutherland, FOX News.

Follow Rachel Sutherland on Twitter: @SutherlandFOX