Quote by CBS News

A law enforcement source told CBS News, the BBC's US partner, that the shooting appeared to be the result of an argument that turned violent. The source said it was not terrorism-related.

Quote by Paul Contreras

Witness Paul Contreras

A 46-year-old man, Paul Contreras, told local television station, KETV, that he was one of the fans who helped "tackle" the man, and saw him drop a gun when he was knocked down.

Quote by Quinton Lucas

Mayor of Kansas City Quinton Lucas

Kansas City's Mayor, Quinton Lucas, said he was inside Union Station when he and others heard the sound of gunfire. He and members of his family started running.

Quote by Travis Kelce

Player, Kansas City Chiefs Travis Kelce from Kansas City Chiefs

Travis Kelce, the star tight end of the team whose relationship with Taylor Swift became a cultural phenomenon, wrote on social media that he was "heartbroken over the tragedy that took place today".

Quote by Marquez Valdes-Scantling

Player, Kansas City Chiefs Marquez Valdes-Scantling from Kansas City Chiefs

Marquez Valdes-Scantling, a wide receiver for the Chiefs, also took to social media after the tragedy. He said he wanted to get in touch with the young victims of the shooting.

Quote by Joe Biden

President of the United States Joe Biden

In a statement, US President Joe Biden also reflected on the issue of gun violence in the country. "Today's events should move us, shock us, shame us into action," he said, as he called for gun reform and a ban on assault rifles in the US.