The White House was placed in lockdown on Saturday after a man reportedly shot himself just outside the fence line.

The Secret Service tweeted about noon Saturday that personnel are responding and a person "allegedly suffered a self-inflicted gun shot wound along the north fence line" of the White House.

President Donald Trump is currently at his Florida golf resort Mar-a-Lago, but is set to return to Washington DC on Saturday afternoon.

The Secret Service said in a Twitter post that there are no other reported injuries related to the incident.

The District of Columbia police says its homicide/natural death unit is responding.

White House press secretary Sarah Huckabee Sanders said "we are aware of the situation, the president has been briefed".

The man's condition is unknown.