WASHINGTON (Sputnik) — The US congressmen said that a staffer brought a firearm into the Capitol building, which caused the lockdown, according to the Hill.
U.S. congressman says a congressional staffer was seen with a firearm. Police looking for a female in the basement of the congress #Lockdown— valia chami (@valiachami) 8 июля 2016 г.
"Lockdown at Capitol lifted: I’m OK.," the message said.
Capitol lockdown is OVER.— Steven Portnoy (@stevenportnoy) 8 июля 2016 г.
We're being waived into the building.
The lockdown started just after 9 a.m. EDT (3 p.m. GMT) on Friday morning and ended about 40 minutes later.