Photos: Shooting in Kansas City after Chiefs' Super Bowl victory parade : The Picture Show One person was killed and at least 21 others were injured in the attack outside Union Station in Kansas City.

Photos: Shooting in Kansas City after Chiefs' victory parade

People flee after shots were fired near the Kansas City Chiefs' 2024 Super Bowl victory parade on Wednesday in Kansas City, Mo. Andrew Caballero-Reynolds/AFP via Getty Images hide caption

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Andrew Caballero-Reynolds/AFP via Getty Images

People flee after shots were fired near the Kansas City Chiefs' 2024 Super Bowl victory parade on Wednesday in Kansas City, Mo.

Andrew Caballero-Reynolds/AFP via Getty Images

Americans are, once again, expressing outrage over a mass shooting, this time at the end of a parade Wednesday honoring the 2024 Super Bowl champion Kansas City Chiefs.

One person was killed and at least 21 others were injured in the attack outside Union Station in Kansas City, Mo.

Doctors and administrators at Children's Mercy, one of three Kansas City, Mo.-area hospitals where shooting victims were transported, said at a press conference that they treated 11 children. Nine of those children suffered gunshot wounds. Their ages ranged from 6 to 15.

Here is the scene:

People take cover during a shooting at Union Station during the Kansas City Chiefs' victory celebration. Jamie Squire/Getty Images hide caption

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Jamie Squire/Getty Images

An injured person is aided near the Chiefs' Super Bowl victory parade. Andrew Caballero-Reynolds/AFP via Getty Images hide caption

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Andrew Caballero-Reynolds/AFP via Getty Images

Several people were shot and two people were detained after a rally celebrating the Chiefs' Super Bowl victory. Jamie Squire/Getty Images hide caption

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Jamie Squire/Getty Images

People leave the area following a shooting at Union Station. Jamie Squire/Getty Images hide caption

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Jamie Squire/Getty Images

An injured person is helped near the Chiefs' victory parade. Andrew Caballero-Reynolds/AFP via Getty Images hide caption

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Andrew Caballero-Reynolds/AFP via Getty Images

People flee after shots were fired near the victory parade. Andrew Caballero-Reynolds/AFP via Getty Images hide caption

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Andrew Caballero-Reynolds/AFP via Getty Images

People take cover during a shooting at Union Station. Jamie Squire/Getty Images hide caption

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Jamie Squire/Getty Images

Law enforcement responds to a shooting at Union Station during the Kansas City Chiefs' Super Bowl victory parade. Jamie Squire/Getty Images hide caption

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Jamie Squire/Getty Images

Law enforcement and medical personnel respond to a shooting at Union Station. Jamie Squire/Getty Images hide caption

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Jamie Squire/Getty Images

Emergency personnel (left) take a stretcher into Union Station. Reed Hoffmann/AP hide caption

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Reed Hoffmann/AP

The Kansas City Chiefs celebrate during their victory rally at Union Station in Kansas City, Mo. Charlie Riedel/AP hide caption

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Charlie Riedel/AP

Law enforcement and medical personnel respond to a shooting at Union Station during the Kansas City Chiefs' 2024 Super Bowl victory parade. Jamie Squire/Getty Images hide caption

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Jamie Squire/Getty Images

Members of law enforcement respond to a shooting at Union Station during the Kansas City Chiefs' Super Bowl victory parade. David Eulitt/Getty Images hide caption

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David Eulitt/Getty Images

Multiple people were injured after gunfire erupted at the Kansas City Chiefs' Super Bowl victory rally on Wednesday, local police said. Andrew Caballero-Reynolds/AFP via Getty Images hide caption

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Andrew Caballero-Reynolds/AFP via Getty Images