ncy officials said.There are metal detectors at the entrances...question is how a gun got in...City Hall guards are not armed, but there is a Police Station in the building.http://www.washingtonpost.com/wp-dyn/articles/A35143-2003Jul23.html?nav=hptoc_nAt least a dozen shots echoed across the second floor of the landmark lower Manhattan building, sending people diving for cover beneath their desks