The Brief The Cook County Sheriff's Office announced five recent cases involving alleged gun, drug and weapons crimes. The Cook County Sheriff's Office announced several recent arrests tied to gun, drug and weapons investigations in Chicago and suburban Cook County. David Foster and the gun recovered | CCSOFoster was charged with aggravated unlawful possession of a weapon. He was charged with unlawful possession of a machine gun and ordered held in Cook County Jail during a July 10 court hearing. He was charged with unlawful possession of a weapon and misdemeanor unlawful possession of cannabis by a driver, along with a traffic citation.