Secret Service Shoots, Kills Gunman Outside White House

The U.S. Secret Service shot and killed an individual who fired a weapon near a security checkpoint at the White House, according to officials. The incident prompted a brief lockdown of the White House.

Details surrounding the shooter's identity and motivations remain under investigation. The Secret Service has not released further information about the circumstances leading up to the shooting.

NBC News is reporting on the ongoing investigation and will provide updates as information becomes available.