Secret Service agent shot armed man at White House checkpoint
The White House has been placed on security alert after a man was shot outside the building.
The incident occurred on West Executive Drive in Washington DC shortly after 3pm local time (7pm).
It is understood that President Barack Obama was not in the White House at the time.
Officials told media that he was away at Andrews Air Force Base to play golf at the time.
The Secret Service is confirming a police involved shooting near the @WhiteHouse complex. All Secret Service protectees are safe.— U.S. Secret Service (@SecretService) May 20, 2016
First Lady Michelle Obama finished a speech in central Washington at midday, but her office would not say whether she, or the Obama daughters, were at the White House at the time.
A Secret Service agent shot the armed man at a security checkpoint when he advanced upon them.
Witnesses have reported that the man fired his weapon, despite calls from a number of officers to drop his weapon.
When he continued to advance towards the checkpoint, the man was shot in the chest and disarmed.
He has since been taken to a nearby hospital where his injuries are reportedly critical condition.
The building was placed on lockdown while the incident was ongoing.
Reporters at the White House were kept in the press briefing room and were been allowed to go outside the West Wing to Pennsylvania Avenue.
It is understood that the lockdown has since been lifted but security remains on high alert.
"No one within or associated with the White House was injured, and everyone in the White House is safe and accounted for," a White House official said in an email. "The president has been made aware of the situation."
More to follow...