The incident comes as psyches remain scarred and security tight after the January assault on Congress by hundreds of supporters of then-President Donald Trump.
A US Capitol police officer was killed and a second injured Friday after a vehicle rammed through security and crashed into a barrier at the Washington complex, forcing it into lockdown less than three months after a mob assault on Congress.
Capitol Police shot dead the driver after he jumped out of the car and lunged at them with a knife, Acting Chief Yogananda Pittman told reporters.
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