The interior of Union Station in Washington, D.C.Jonathan Ernst / Reuters

Washington, D.C.’s main train station was briefly evacuated Wednesday during end-of-day rush hour following reports of a suspicious package, according to police and reports on social media.

People outside of Union Station posted video footage at about 5:30 p.m. local time showing hordes of people leaving the building, and police sirens could be heard in the background. Police swept the station, and about half an hour later said no threat was found. People were then allowed back inside.

Here’s the scene from the evacuation:

Metro Police said on Twitter officers investigated the suspicious package with the help of police dogs:

Union Station has a number of transportation services, including the Washington metro, Amtrak, the MARC commuter rail service, and buses. It also houses shops and restaurants.

About 40 million people visited Union Station each year, including 15.5 million local residents, according to its website. The website estimates 75 percent of all Capitol Hill employees pass through the station each day.

We want to hear what you think about this article. Submit a letter to the editor or write to letters@theatlantic.com.