White House lockdown after ‘metal object’ hurled over fence

Law enforcement personnel stand near the Ellipse south of the White House on Constitution Avenue, Friday, May 20, 2016 in Washington. A uniformed Secret Service officer shot a person who drew a weapon just outside the White House Friday afternoon, a U.S. law enforcement official said. AP PHOTO

Authorities temporarily placed the White House on lockdown Monday after someone threw a metal object over the fence around the presidential mansion, officials said. 

Reporters working at the White House said a woman had been arrested.

READ: US Congress and White House on lockdown after reports of shooting on Capitol Hill | 

“An individual threw a metal object over the north fence line at the White House,” the Secret Service said in a statement after the approximately three-hour lockdown ended.

“Secret Service uniformed division officers immediately apprehended the individual without incident.”

Officials said they conducted “protective sweeps” of the object but determined it was not a threat.

“The White House has returned to normal operations,” the Secret Service said.

President Barack Obama had been attending a Memorial Day service at Arlington National Cemetery when the incident occurred.