Federal agents launched searches in Pennsylvania after a homemade explosive device was discovered outside Gracie Mansion, the official residence of Mayor Zohran Mamdani. The device failed to detonate, preventing potential injuries or damage to the historic property. Authorities moved quickly to secure the area and investigate the incident.

Gracie Mansion, located in Manhattan's Carl Schurz Park, serves as the mayor's official residence and a venue for city events. The discovery of an unexploded bomb at such a high-profile location raised immediate security concerns throughout New York City. Law enforcement officials worked through the night to determine the device's origin and potential threat level.

The investigation extended beyond New York City, with federal authorities conducting searches in Pennsylvania. While specific details about the searches remain limited, the cross-state operation suggests investigators are pursuing leads that may connect the attempted attack to individuals or groups outside the immediate area. The FBI and other federal agencies are coordinating with New York police to piece together the events surrounding the incident.