Gunfire at Chiefs' Super Bowl celebration kills 1 and wounds nearly two-dozen, including children

A historic railway station on the edge of downtown Kansas City became the latest backdrop for a mass shooting as gunfire near the end of the Kansas City Chiefs' Super Bowl celebration sent terrified fans scrambling for cover and left 21 people wounded — including at least eight children — and a mother of two dead.

Wednesday's shooting outside Union Station happened despite the presence of more than 800 police officers who were in the building and nearby, including on top of nearby structures, said Mayor Quinton Lucas, who attended with his wife and mother and ran for safety when the shots rang out.

“Parades, rallies, schools, movies. It seems like almost nothing is safe,” Lucas said.

Three people were detained and firearms were recovered, Police Chief Stacey Graves said at an evening news conference. She said police were still piecing together what happened and did not release details about those who were detained or a possible motive.

“I’m angry at what happened today. The people who came to this celebration should expect a safe environment,” Graves said.

It is the latest sports celebration in the U.S. to be marred by gun violence, following a shooting that wounded several people last year in Denver after the Nuggets' NBA championship, and gunfire last year at a parking lot near the Texas Rangers' World Series championship parade.

Social media users posted shocking video of police running through Wednesday's crowded scene as people scrambled for cover and fled. One video showed someone apparently performing chest compressions on a victim as another person, seemingly writhing in pain, lay on the ground nearby. People screamed in the background.

Another video showed two people chase and tackle a person, holding them