It has been reported the WHite House and The Capital building were called to evacuate all buildings.  Alarms were ringing throughout the buildings, and announcements told people to go into the basement.

Immediately after the evacuation news, a report emerged saying "An unidentified aircraft entered the restricted no-fly zone of the capital".

As of now, there is no immediate danger and the threat has retreated.

We will update as more info becomes available.

UPDATE:::   The aircraft has been unidentified as carrying Kentucky Gov. Ernie Fletcher who had authorization to fly in that area..

Seems like a communications failure as of now.