Police say the U.S. Capitol has been put on a security lockdown amid reports of possible shots fired outside the building.
People standing outside the Supreme Court across the street from Congress were hurried into the court building by authorities.
In a notice distributed by email, the U.S. Capitol Police advised everyone to "close, lock and stay away from external doors and windows.
The notice said gunshots have been reported on Capitol Hill. There are unconfirmed reports of an officer injured.
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