Gunshots have been reported during a caller centre during a US Capitol in Washington and workers have been told to take shelter.
The Capitol’s Sergeant-At-Arms pronounced a gunman has been held and one military officer was wounded.
The Capitol building is on lockdown due to a confidence threat, according to an email sent to congressional staffers.
People outward have been told to find cover.
No one is now authorised in or out of any buildings in a Capitol complex.
Capitol Police are approaching to emanate a matter soon.