A suspect plotted to place at least seven improvised explosives across New York City, including on a subway track on the Williamsburg Bridge and a Manhattan apartment rooftop, according to law enforcement.

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.