Police: More than dozen trampled in Chicago July 4 stampede

Police said a false report of gunfire set off a stampede that trampled more than a dozen people at Chicago's annual July 4 fireworks display Thursday at Navy Pier, where thousands of revellers had crowded the Lake Michigan shore.

Three others were stabbed when a fight broke out after a group of young males flashed gang signs. Two teenage boys, ages 14 and 15, and a 30-year-old man suffered non-life-threatening injuries.

Police spokeswoman Kellie Bartoli said police were searching Friday for two male suspects in the stabbings.

Chicago Police Spokesman Rocco Alito said officers believe that after that altercation someone threw firecrackers at the pier and others yelled "gun" or "shots fired," spurring a "stampede" that injured 14 people.

They were taken to hospitals with non-life-threatening injuries, Alioto said, adding that initial reports of gunfire were inaccurate.

Rachel Schar, who's a server at the waterfront restaurant Harry Caray's Tavern, said that during ensuing panic crowds of visitors swarmed the restaurant for at least 10 minutes to escape what they believed was an active shooter at the pier.

"It was pure chaos," the 22-year-old told the Chicago Tribune. "I literally thought I was going to die."