Police in Las Vegas, Nevada say a man opened fire on a country music concert late Sunday, killing at least 50 people and wounding more than 400 others, in the deadliest mass shooting in U.S. history.
Las Vegas Shooting

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Police stand at the scene of a shooting along the Las Vegas Strip, Oct. 2, 2017, in Las Vegas.

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A pair of cowboy boots is shown in the street outside the concert venue after a mass shooting at a music festival on the Las Vegas Strip in Las Vegas, Nevada, U.S.

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Crime scene tape surrounds the Mandalay Hotel (background) after a gunman killed at least 50 people and wounded more than 200 others when he opened fire on a country music concert in Las Vegas, Nevada, Oct. 2, 2017.