UPDATE: According to ABC News reporter, Em Nguyen, the security threat has ended.

Nguyen reports that security guards seemed to be looking for a suspicious person.

According to ABC News reporter, John Parkinson, an email went out by U.S. Capitol Police warning of a security threat.

The email says to :

  • move inside your office or nearest office
  • Take emergency equipment and visitors
  • close, lock and stay away from doors and windows
  • If you are ina public place, find a place to hide
  • Remain quiet and silence electronics
  • No one is permitted to enter or exit the building until directed by USCP