Police: 'Gunman' holding 5 firefighters hostage in suburban Atlanta April 10, 2013 -- Updated 2138 GMT (0538 HKT) (CNN) -- A "barricaded gunman" is holding five Gwinnett County, Georgia, firefighters hostage in suburban Atlanta, a police spokesman said. The hostage situation occurred after firefighters responded to a residence in Suwanee, Georgia "for some type of medical call," Gwinnett County police spokesman Ed Ritter said. Police later sent out a request to local TV stations telling them not to send helicopters over the area, in the interest of assuring the safety of those involved in the situation. CNN's Dave Alsup contributed to this report.