J. Kim Murphy Filming on “Chicago Fire” was halted on Wednesday afternoon after a gunman fired at a group of people nearby the production set for NBC’s marquee drama series. In a statement to news media, the Chicago Police Department shared that an unidentified individual carrying a handgun shot at a group of people standing in the 5900 block of W. Madison Street at approximately 1:45 p.m local time. The suspect then fled the area in a dark-colored SUV. Authorities shared that nobody was struck by the gunman. The incident is currently under investigation. A source close to the production shared that reports regarding the decision to suspend filming after the shooting were accurate. Immediately following the incident, the production entered its standard security protocols.