WILLOWBROOK, Ill. (AP) — Authorities say one person is dead and at least 22 are wounded in suburban Chicago after a shooting early Sunday during a large gathering in a strip mall parking lot. The DuPage County sheriff’s office described it as a “peaceful gathering” to celebrate Juneteenth that suddenly turned violent in Willowbrook, about 20 miles southwest of Chicago. Investigators are still trying to determine a motive behind the shooting. There were no immediate arrests. The sheriff’s office says police were at the strip mall before the shooting to monitor the gathering but were called away because of a nearby fight. They rushed back to the scene when they heard gunfire.