Police are responding to reports of a man with a weapon at Gannett's national headquarters in McLean, Virginia.
Hundreds of employees of the USA Today newspaper publisher and people who work for other companies in the building filed outside after Fairfax County police received an emergency call at about noon.
Police said in an update that they had not found any "evidence of any acts of violence or injuries."
A federal law enforcement official told USA Today that authorities received a mistaken report of a person with a weapon.
County police did not immediately release additional information but are expected to address the media Wednesday afternoon.
[[525726501,C]]
The investigation is ongoing.
The Gannett building is located at 7950 Jones Branch Drive, near the Capital Beltway and the shopping malls, office buildings and homes of Tysons Corner.
A woman who works in the building said she was down the block when she saw about 20 police cars head toward her office.
"I just kept walking," Alex Singer said, with a nervous laugh. "I don't really know, but with everything that's gone on in the past week, I just don't wanna take any chances."
Chopper4 footage showed police and ambulances on the scene. An American flag outside the building hung at half-staff after the shootings in El Paso and Dayton.
[[525706661,C]]
The large police response follows the deadly shooting in the Capital Gazette newsroom in Annapolis, Maryland, in June 2018. The alleged gunman killed five people after a longtime dispute with the newspaper's editor.
Police advised people to avoid the area. For people affected by the incident, a reunification center was set up at the Hilton McLean Tysons Corner hotel, at 7920 Jones Branch Drive.
Stay with News4 for more details on this developing story.
Photo Credit: Chopper4, WRC-TV
This story uses functionality that may not work in our app. Click here to open the story in your web browser.