The U.S. Secret Service is investigating reports of gunfire near the White House, prompting a brief security lockdown as officers searched the area. No injuries or arrests were immediately reported.
Authorities have identified the suspected gunman who triggered a security alert at the White House press dinner, The Guardian reports, as investigators probe motive and possible accomplices.
Two National Guard members were shot near the White House, prompting a swift security response and investigation. Authorities say the troops were on duty; a motive has not yet been determined.