Law enforcement officers stand on Pennsylvania Avenue in front of the White House in Washington, Friday, May 20, 2016, after the White House was placed on lockdown for a shooting nearby. A U.S. Secret Service officer shot a man with a gun who approached a checkpoint outside the White House on Friday afternoon and refused to drop his weapon, the Secret Service said. (AP Photo/Andrew Harnik)

Man shot outside White House remains in critical condition

Secret Service Deputy Assistant Director David Lacovetti said Friday that one of the agency’s officers shot the man once after he approached a checkpoint at about 3 p.m. and refused repeated commands to drop his weapon.