Police said they believe there were at least three shooters: a 15-year-old, an acquaintance who died at the scene and "at least one other unknown suspect."
Among the participants were some young people and parents who appreciated having a safe, positive event on a Saturday.
President Donald Trump took to social media Tuesday to criticize Mayor Brandon Johnson and Gov. JB Pritzker, after dozens were arrested, three shot and several police officers injured amid so-called teen takeovers over Memorial Day weekend in Chicago.
Some alderpersons are seeking to curb teen takeovers through parent accountability after a triple shooting happened near the latest gathering.
A relative stopped a high school student's alleged elementary school shooting plot in the south suburbs on Friday afternoon, the Will County Sheriff's Office said.
Community-based groups are doubling down on their pleas to parents to ensure that any teen gathering over the summer is a safe one.