A 55-year-old man was indicted Tuesday after creating and placing at least seven improvised explosive devices in different areas of New York City, including subway track on the Williamsburg Bridge and on a Manhattan rooftop,

A man accused of building explosive devices and stashing them on Manhattan rooftops and the Williamsburg Bridge has been indicted on weapons-related charges, authorities say. Michael Gann allegedly made at least seven improved explosive devices (IEDs) using precursor chemicals — chemicals that can be combined into an explosive mixture — that he bought online.

Michael Gann is accused of making at least seven explosives in NYC, and throwing some off the Williamsburg Bridge​ into the East River.

A New York City man, 55-year-old Michael Gann, is accused of manufacturing at least seven improvised explosive devices (IEDs) and throwing at least one of them off a Brooklyn bridge. According to a release issued by the U.

The 55-year-old man allegedly stored some on the devices on the rooftops of adjoining residential buildings and threw another onto the subway tracks on the Williamsburg Bridge, prosecutors said.

Michael Gann, who allegedly built explosive devices and hid them on rooftops around New York City, pleaded not guilty to federal charges.