Jay Clayton, U.S. Attorney for the Southern District of New York | Department of Justice
United States Attorney for the Southern District of New York, Jay Clayton, announced charges against Michael Gann. The charges allege that Gann manufactured at least seven improvised explosive devices (IEDs) using precursor chemicals ordered online. These devices were reportedly stored on rooftops in SoHo, Manhattan, and one was thrown onto subway tracks on the Williamsburg Bridge.
Clayton emphasized the risk to public safety: "As alleged, Michael Gann built explosive devices, stored them on a rooftop in SoHo, and threw one onto the subway tracks—putting countless lives at risk." He credited law enforcement's quick action with preventing harm.
FBI Assistant Director Christopher G. Raia stated: "Michael Gann allegedly produced multiple improvised explosive devices intended for use in Manhattan." He praised the partnership between law enforcement agencies that led to Gann's swift arrest.
NYPD Commissioner Jessica S. Tisch remarked: "This defendant allegedly stockpiled homemade explosives and traveled to New York City with these deadly devices."
According to court documents, Gann ordered chemicals such as potassium perchlorate and aluminum powder online. In June 2025, he received these materials and assembled IEDs. Law enforcement arrested him in SoHo on June 5, 2025, recovering an IED from his possession.
Gann faces several charges including attempted destruction of property by means of explosives and unlawful possession of destructive devices. Each charge carries significant potential prison sentences.
Clayton commended the efforts of various law enforcement bodies including the FBI's Joint Terrorism Task Force and other agencies involved in the investigation.
The case is managed by the National Security and International Narcotics Unit with several assistant U.S. attorneys handling prosecution.
