Anchored by Jake Tapper, The Lead airs at 4 p.m. ET on CNN.
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The U.S. House of Representatives had just finished the first series of votes in the House. Lawmakers were outside the Speaker's lobby, where there is a balcony that faces south.
Congressman Matthew Cartwright was having a quiet chat with a colleague, Rep. Jerry Connelly, sitting on the balcony outside when they heard the gun shots.
Witness Julie Paladino was near Capitol Hill and used her cell phone to capture audio of shots being fired Thursday.
Sen. Bernie Sanders was walking the grounds of Capitol Hill with colleagues on Thursday, on his way back from a meeting, when he heard the gun shots.
"What I saw on Constitution Avenue was just a bunch of police cars racing down the street, sirens blaring, and then I stopped to look at that. Then I heard the gunshots, four or five shots, ring out," said the Independent from Vermont.
He and his colleagues immediately ran for cover.
Washington (CNN) - Police near the U.S. Capitol opened fire on Thursday on a car being chased by authorities, hitting a woman driving the vehicle that also contained a child, an intelligence source told CNN.
The child appeared to be uninjured, according to the source and witnesses.
During the pursuit, the driver of the black car hit another police cruiser. Sources tell CNN's Deborah Feyerick that the police officer in that cruiser had to be extricated using the jaws of life.