KANSAS CITY — Eight children were among 22 people hit by gunfire in a shooting at the end of Wednesday’s parade to celebrate the Kansas City Chiefs’ Super Bowl win, authorities said, as terrified fans ran for cover and yet another high-profile public event was marred by gun violence. One person was killed.

Kansas City Police Chief Stacey Graves detailed the shooting’s toll at a news conference and said three people had been taken into custody. She said she has heard that fans may have been involved in apprehending a suspect but couldn’t immediately confirm that.

“I’m angry at what happened today. The people who came to this celebration should expect a safe environment.” Graves said. Police did not immediately release any details about the people taken into custody or about a possible motive for the shootings.

It is the latest sports celebration in the U.S. to be marred by gun violence, following a shooting that injured several people last year in downtown 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 a crowded scene as people hurriedly scrambled for cover and fled. One video showed someone apparently performing chest compressions on a shooting 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 down until two police officers arrived.

Radio station KKFI said in a Facebook post Wednesday evening that DJ Lisa Lopez, host of “Taste of Tejano,” was killed in the shooting.

“This senseless act has taken a beautiful person from her family and this KC Community,” KKFI said in a statement.

The shooting outside Union Station happened despite more than 800 police officers who were in the building and around the area, including on top of nearby buildings, said Mayor Quinton Lucas, who attended with his wife and mother and had to run for cover when gunfire broke out.

“I think that’s something that all of us who are parents, who are just regular people living each day, have to decide what we wish to do about,” Lucas said. “Parades, rallies, schools, movies. It seems like almost nothing is safe.”

Kansas City has long struggled with gun violence, and in 2020 it was among nine cities targeted by the U.S. Justice Department in an effort to crack down on violent crime. In 2023 the city matched a record with 182 homicides, most of which involved guns.

Lucas has joined with mayors across the country in calling for new laws to reduce gun violence, including mandating universal background checks.

Lucas, who attended the celebration with his wife and mother, said he was heartbroken and angry.

“This is absolutely a tragedy, the likes of which we never would have expected in Kansas City, the likes of which we’ll remember for some time,” Lucas said.

Near the end of the parade, Lisa Money of Kansas City, Kansas, was trying to gather some confetti when she heard somebody yell “Down, down, everybody down!”

At first Money thought somebody might be joking until she saw the SWAT team jumping over the fence.

“I can’t believe it really happened. Who in their right mind would do something like this? This is supposed to be a day of celebration for everybody in the city and the surrounding area. and then you’ve got some idiot that wants to come along and do something like this,” she said.

Ofilio Martinez, 48, said he heard shots fired a couple blocks away about 10 or 15 minutes before the gunfire near the Union Station rally.

“This is making me nervous, scared,” he said.

Kevin Sanders, 53, of Lenexa, said he heard what sounded like firecrackers and then people running back. After that initial flurry, calm returned, and he didn’t think much of it. “We were skeptical,” he said.

But he said 10 minutes later, ambulances started showing up.

“It sucks that someone had to ruin the celebration, but we are in a big city,” Sanders said.

University of Kansas Health System spokeswoman Nancy Lewis said the hospital was treating eight gunshot victims. Two were in critical condition and six were in stable condition, she said. The hospital also was treating four people for other injuries resulting from the chaos after the shooting, Lewis said.

Lisa Augustine, spokesperson for Children’s Mercy Kansas City, said the hospital was treating 12 patients from the rally, including 11 children, some of whom suffered gunshot wounds.

St. Luke’s Hospital of Kansas City received one gunshot patient in critical condition and three walk-in patients with injuries that were not life-threatening, spokesperson Laurel Gifford said.

“State law enforcement personnel are assisting local authorities in response efforts,” Parson posted. “As we wait to learn more, our hearts go out to the victims.”

Chiefs trainer Rick Burkholder said he was with coach Andy Reid and other coaches and staff members, and the team was on buses and returning to Arrowhead Stadium.

Areas that had been filled with crowds were empty after the shooting, with police and firefighters standing and talking behind an area restricted by yellow tape.

Chiefs trainer Rick Burkholder said he was with coach Andy Reid and other coaches and staff members at the time of the shooting, and that the team was on buses and returning to Arrowhead Stadium.

“Praying for Kansas City,” Chiefs quarterback and Super Bowl MVP Patrick Mahomes said in a post on X, formerly known as Twitter, that also included three emojis of hands in prayer.

Missouri’s Republican Gov. Mike Parson and First Lady Teresa Parson were at the parade during the gunfire but were unhurt. “Thanks to the professionalism of our security officers and first responders, Teresa and I and our staff are safe and secure,” Parson said in a statement.

President Joe Biden has been briefed on the shooting in Kansas City and will continue to receive updates, a White House spokesperson said. White House officials have been in touch with state and local leaders, and federal law enforcement is on the scene supporting local law enforcement.

Areas that had been filled with crowds were empty after the shooting, with police and firefighters standing and talking behind an area restricted by yellow tape.

Throngs had lined the route, with fans climbing trees and street poles, or standing on rooftops for a better view. Players rolled through the crowd on double-decker buses, DJs and drummers heralding their arrival. Owner Clark Hunt was on one of those buses, holding the Lombardi Trophy.

The city and the team each chipped in around $1 million for the event commemorating Travis Kelce, Mahomes and the Chiefs becoming the first team since Tom Brady and the New England Patriots two decades ago to defend their title.

After decades without a championship, the city is gaining experience with victory parades. In February 2020, the Chiefs defeated the 49ers for the team’s first Super Bowl championship in 50 years. That followed the Kansas City Royals winning the World Series in 2015, the city’s first baseball championship in 30 years. That year, fans abandoned their cars on the side of the highway so they could walk to the celebration.

Then, last year, the Chiefs defeated the Philadelphia Eagles 38-35 and prophetically vowed they would be back for more.