A man with a gun was shot by the Secret Service at a White House checkpoint on Friday.
Secret Service officers told the man to stop and drop his gun as he approached the checkpoint near the Executive Office Building, but shot him after he did not follow their instructions, the Secret Service said in a statement.
He was taken into custody and transported to a hospital for treatment, the agency said.
The White House complex was placed on lockdown after the 3:06 pm (1906 GMT) incident.
No one else was hurt and the White House complex was never breached.
Police had blocked off the park in front of the executive mansion and reporters in the press room said they were told to shelter in the basement. The lockdown was later lifted.
US President Barack Obama was not at home at the time of the incident. He was playing golf at a nearby air force base, but was made aware of the incident, the White House said.