Man arrested over firecrackers scare at White House soon after shooting
A man threw firecrackers over the White House's north fence just hours after the shooting rampage in Washington, the US Secret Service said.
Uniformed agents sealed off the area in front of the presidential mansion and ordered journalists in the driveway in front of the West Wing to move inside the building.
With the capital on high alert after the earlier shootings, reaction to the firecrackers was immediate, with some people tweeting that shots had been heard.
"There have not been shots outside the White House," said Secret Service spokesman Ed Donovan.
Video of the incident showed agents apprehending a man dressed in shorts and a short-sleeved shirt before leading him away. The man, identified as Alexander Sahagian, was arrested, a law enforcement official said.
The charge was likely to be throwing projectiles.