UPDATE: The White House and the U.S. Capitol were put on temporary lockdown following an airspace violation in Washington D.C., according to law enforcement sources.

Fighter jets were mobilized.

The North Lawn of the White House was cleared.
 

The lockdown began shortly before 9 a.m. and was reported lifted about 20 minutes later.

This is a breaking story. Check back for updates.


PREVIOUS STORY: The White House is on lockdown following an airspace violation in Washington D.C., according to law enforcement sources.

Fighter jets have been mobilized. 

The North Lawn of the White House has been cleared, and pedestrian traffic in the area has been restricted.
 

This is a breaking story. Check back for updates.