Capitol Police investigate suspicious vehicle near Library of Congress

(WASHINGTON) — The Cannon House Office Building, a congressional office building in Washington, D.C., was evacuated via underground routes Thursday morning due to a suspicious vehicle, according to a law enforcement sources.

The Capitol Police in a tweet called it “an active bomb threat investigation.”

The Library of Congress and Supreme Court building were also evacuated. Both the Supreme Court and Congress are on recess.

Messages have been sent to congressional staffers asking that they “remain calm and relocate to Longworth House Office Building using the underground tunnels.”

Senate staff were asked in a message to “remain clear of the police activity” and to “please move indoors” if they were outside on Capitol grounds.

The FBI said it’s responding. The White House is monitoring the situation and is receiving updates from law enforcement, according to an administration official.

This is a developing story. Please check back for updates.

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