Gunfire outside a nearby former train station in Kansas City, Missouri, sent crowds of fans of the American football team running for safety on Wednesday.

One person - a local radio DJ named locally as Lisa Lopez-Galvan - was killed and more than 20 were injured. Three suspects were arrested in the aftermath.

Jackson County Family Court said the two youths who have been charged have been detained in the county's Juvenile Detention Centre "on gun-related and resisting arrest charges".

"Additional charges are expected in the future" as the police investigation continues, authorities added.

More than half of the victims in the shooting on Wednesday were also aged under 16, police said on Thursday.

One other youth, who was arrested earlier, has since been released after officers determined they were not involved.

The shooting outside Union Station occurred despite the presence of more than 800 police officers who were in the building and surrounding area.

Kansas City Chiefs stars reacted with horror after the shooting.

The Chiefs' star quarterback Patrick Mahomes wrote on X: "Praying for Kansas City," shortly after the attack, while Travis Kelce, a Chiefs linebacker and boyfriend of Taylor Swift, said in a statement on Wednesday: "I am heartbroken over the tragedy that took place today.

"My heart is with all who came out to celebrate with us and have been affected. KC, you mean the world to me."

The parade was celebrating the Chiefs' win over the San Francisco 49ers, 25-22 in overtime.