Chicago police are investigating a series of burglaries that have occurred on the city's South Side, where groups of four to eight thieves have been using chains and stolen vehicles to pull doors off businesses. Over 20 incidents have been reported in August, primarily during early morning hours, targeting locations across neighborhoods such as South Deering and Calumet Heights. Once inside, the burglars have stolen cash registers, ATM machines, and tobacco products. The police have issued a community alert and are urging anyone with information to contact Area Two detectives. Investigators have noted that the suspects typically wear dark clothing and masks during the crimes. A list of specific locations and times for the burglaries has been provided to assist in the investigation.