Shoot @ White House Friday PM

By Jordan Fabian - 05/20/16 03:33 PM EDT

The White House was placed into lockdown for just under an hour Friday afternoon after a shooting near the executive branch complex.

A man carrying a firearm approached a security checkpoint on the outer perimeter of the White House grounds on E St., NW, just after 3 p.m., according to a Secret Service spokesman.

The man was shot once by a Secret Service agent and taken into custody after ignoring “numerous verbal commands” from uniformed officers “to stop and drop the firearm.”

The suspect was transported to a local hospital to receive medical treatment. D.C. Fire and EMS tweeted that the person sustained critical injuries.

An agency source said the man never gained access to White House grounds and no law enforcement officers or bystanders were injured.

Vice President Joe Biden, who was on the White House grounds when the incident occurred, was secured at the complex.

President Obama was not inside the White House at the time of the incident; he was at Andrews Air Force Base in Maryland golfing with aides.

Obama was "made aware" of the shooting, a White House official said.

"No one within or associated with the White House was injured, and everyone in the White House is safe and accounted for,” the official added.

The incident caused a stir at the White House and in the surrounding area, which was crowded with tourists and area workers.

Reporters inside the White House were told to remain inside and shelter in place after the incident. The lockdown was lifted at about 4 p.m.