Three people, including a 3-year-old boy, are in critical condition Friday after an apparent gang-related shooting at a neighborhood basketball court in Chicago that left up to 13 people injured.

At least 10 ambulances were sent to the site in Chicago's Back of the Yards neighborhood after 10 p.m. Thursday, WGN-TV reports. No deaths were reported.

Police spokesman Ron Gaines said that victims were being interviewed to determine the circumstances of the shooting. As of Friday morning, no arrests have been reported.

A witness, Julian Harris, told the Chicago Sun-Times that dreadlocked men fired at him from a gray sedan before turning toward Cornell Square Park and firing at people. He said his 3-year-old nephew was wounded in the cheek.