Law enforcement swarms Dixmoor neighborhood; several taken into custody

A heavy law enforcement presence was reported in south suburban Dixmoor on Wednesday morning as authorities blocked off part of a neighborhood.FBI agents, Cook County sheriff’s deputies and other first responders were observed at the scene around 7 a.m.Flash-bang devices, along with screaming and crying, were reportedly heard during the response.Emergency responders were seen giving CPR to a person before they were placed in an ambulance. Officials have not said where the person was taken or how serious the injuries were.Authorities also put up yellow and red tape around the area, indicating an investigation was underway.Some residents were visibly upset, yelling and demanding answers.A source told FOX Chicago that several people were taken into custody.Officials have not released details about what led to the operation. FOX Chicago is working to learn more.This is a developing story. Check back later for updates.