How the U.S. Capitol shooting played out on social media

WASHINGTON — A woman driving a black Lexus with a young child in the car tried to ram through a White House barricade Thursday, then led police on a chase that ended in gunfire outside the Capitol, witnesses and officials said. Read more or scroll down for the latest updates.

Eyewitness video shows the start of the chase

A Washington police officer stands guard on Capitol Hill in Washington, Thursday, Oct. 3, 2013, after a report of a shooting. A police officer was reported injured after gunshots at the U.S. Capitol, police said Thursday. They locked down the entire complex, at least temporarily derailing debate over how to end a government shutdown. (AP Photo/Molly Riley)

A Capitol Police officer runs through the first floor of the Senate on Capitol Hill in Washington, Thursday, Oct. 3,2013, during the lockdown order following a shooting on Constitution Avenue on Capitol Hll and near the Supreme Court. A police officer was reported injured after gunshots at the U.S. Capitol, police said Thursday. They locked down the entire complex, at least temporarily derailing debate over how to end a government shutdown. (AP Photo/J. Scott Applewhite)

Police run at the corner of Constitution and First Street next to a wrecked police car after shots fired were reported near 2nd Street NW and Constitution Avenue on Capitol Hill in Washington, DC, on October 3, 2013. The US Capitol was placed on security lockdown Thursday after shots were fired outside the complex, senators said. “Shots fired outside the Capitol. We are in temporary lock down,” Senator Claire McCaskill said on Twitter. Police were seen running within the Capitol building and outside as vehicles swarmed to the scene. About half an hour after the incident began, the security lockdown at the Capitol was eased and the doors reopened. AFP Photo/Jewel Samad

Sen. Jack Reed, D-R.I. watches at left as a Capitol Hill police officer puts on a his body armor after a reported shooting on Capitol Hill in Washington, Thursday, Oct. 3, 2013. A police officer was reported injured after gunshots at the U.S. Capitol, police said Thursday. They locked down the entire complex, at least temporarily derailing debate over how to end a government shutdown. (AP Photo/ Evan Vucci)

Police officers attend to an injured police officer after shooting near the Capitol in Washington, DC, on October 3, 2013. A volley of shots rang out outside the US Capitol building on Thursday, sending lawmakers and tourists scattering for cover and triggering a massive security operation. Senators told reporters at the iconic Washington landmark, the seat of Congress, that they had heard up to six shots. Police sealed off the building as emergency vehicles converged at the scene. About half an hour after the incident began, the security lockdown at the Capitol was eased and the doors reopened. AFP Photo/Jewel Samad/AFP/Getty Images

Capitol Hill police are seen at the site of a shooting October 3, 2013 on Capitol Hill in Washington, DC. The US Capitol was placed on security lockdown Thursday after shots were fired outside the complex, senators said. “Shots fired outside the Capitol. We are in temporary lock down,” Senator Claire McCaskill said on Twitter. Police were seen running within the Capitol building and outside as vehicles swarmed to the scene. AFP PHOTO / Mandel NGAN/Getty Images

People run for cover as police converge to the site of a shooting October 3, 2013 on Capitol Hill in Washington, DC. The US Capitol was placed on security lockdown Thursday after shots were fired outside the complex, senators said. “Shots fired outside the Capitol. We are in temporary lock down,” Senator Claire McCaskill said on Twitter. Police were seen running within the Capitol building and outside as vehicles swarmed to the scene. AFP PHOTO / Mandel NGANMANDEL NGAN/AFP/Getty Images

Capitol Hill police and medics take a shooting victim away on a stretcher at the site of a shooting October 3, 2013 on Capitol Hill in Washington, DC. The US Capitol was placed on security lockdown Thursday after shots were fired outside the complex, senators said. “Shots fired outside the Capitol. We are in temporary lock down,” Senator Claire McCaskill said on Twitter. Police were seen running within the Capitol building and outside as vehicles swarmed to the scene. AFP PHOTO/MANDEL NGAN/AFP/Getty Images