NEW YORK CITY — A New York City man accused of plotting to set off homemade explosives he had stashed at sites across Manhattan has been indicted, federal prosecutors said.

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.

Michael Gann, 55, of Inwood, New York, was charged with manufacturing at least seven improvised explosive devices, prosecutors said on July 22.