Shots fired on the sidelines of the parade and several people are said to have been injured. The police arrested two armed people.
Tens of thousands came to celebrate the Kansas City Chiefs' Super Bowl victory three days ago. Fire Department Commander Michael Hopkins told the AP that eight to 10 people were injured. Many fans wondered if pop superstar Taylor Swift would attend the parade. She has a performance in Melbourne, Australia, on Friday evening, the first of three scheduled concerts on her Eras Tour.