<p>US flags are seen outside of Union Station on July 1, 2016, ahead of the Independence Day holiday weekend, in Washington, DC. / AFP / Mandel Ngan (Photo credit should read MANDEL NGAN/AFP/Getty Images)</p>
WUSA-TV in Washington, D.C. reported that parts of Union Station in the nation's capital was evacuated late Wednesday afternoon due to a bomb threat.
Metro Transit Police said that it is investigating a suspicious package near the Amtrak portion of the station. Police are using a K-9 unit to assist in the investigation.
The police also said that a number of entrances into the station are closed as police investigate the suspicious package.