Police investigate a possible bomb threat near the US Capitol and Library of Congress in Washington, DC, on August 19, 2021. Police said Thursday a suspicious vehicle was being investigated for possible explosives and that people were told to leave the area. "The USCP is responding to a suspicious vehicle near the Library of Congress," the US Capitol Police said on its Twitter feed. "This is an active bomb threat investigation." The Federal Bureau of Investigation says it has also joined the probe.,Image: 627884248, License: Rights-managed, Restrictions: , Model Release: no, Credit line: Profimedia

US Capitol police block a street during an investigation of a possible bomb threat near the US Capitol and Library of Congress in Washington, DC, on August 19, 2021. Police said Thursday a suspicious vehicle was being investigated for possible explosives and that people were told to leave the area. "The USCP is responding to a suspicious vehicle near the Library of Congress," the US Capitol Police said on its Twitter feed. "This is an active bomb threat investigation." The Federal Bureau of Investigation says it has also joined the probe.,Image: 627885254, License: Rights-managed, Restrictions: , Model Release: no, Credit line: Profimedia

First responders and police investigate a possible bomb threat near the US Capitol and Library of Congress in Washington, DC, on August 19, 2021. Police said Thursday a suspicious vehicle was being investigated for possible explosives and that people were told to leave the area. "The USCP is responding to a suspicious vehicle near the Library of Congress," the US Capitol Police said on its Twitter feed. "This is an active bomb threat investigation." The Federal Bureau of Investigation says it has also joined the probe.,Image: 627887302, License: Rights-managed, Restrictions: , Model Release: no, Credit line: Profimedia