Stock Markets March 9, 2026 10:49 AM

NYPD Investigates Possible ISIS Link After Explosive Devices Thrown Near Gracie Mansion

Devices that did not detonate are being probed as ISIS-inspired; two people held as federal and local authorities coordinate inquiry

By Ajmal Hussain
NYPD Investigates Possible ISIS Link After Explosive Devices Thrown Near Gracie Mansion

New York City police are examining whether improvised explosive devices thrown during counterprotests near the mayor’s residence were connected to ISIS. The devices did not explode, two people are in custody but not charged, and the investigation involves the NYPD, federal prosecutors and the FBI’s Joint Terrorism Task Force.

Key Points

  • Improvised explosive devices were thrown during counterprotests near Gracie Mansion; none detonated.
  • Police Commissioner Jessica Tisch stated the incident is being treated as ISIS-inspired terrorism and highlighted the devices' potential to cause serious injury or death.
  • The NYPD is coordinating with federal prosecutors and the FBI; agents from the FBI’s Joint Terrorism Task Force have been assigned. Sectors potentially impacted include public safety, municipal governance, and law enforcement operations.

New York City law enforcement officials are probing whether improvised explosive devices that were tossed during counterprotests near Gracie Mansion on Saturday have any link to ISIS, Police Commissioner Jessica Tisch said.

The devices, none of which detonated, were thrown amid clashes that took place as a demonstration organized by far-right activist Jake Lang unfolded outside the mayor’s official residence. The demonstration has been described as a "Stop the Islamic Takeover of New York City" event. The explosive devices were delivered during the counterprotest activity nearby.

Tisch said Monday that the devices possessed the capacity to cause serious injury or death, underscoring the potential severity of what occurred even though the devices did not explode. Two individuals are currently in police custody in connection with the incident; both remain uncharged at this time.

The investigation is a joint effort. The Police Department is working with federal prosecutors and with the FBI. Agents from the FBI’s Joint Terrorism Task Force have been assigned to the case, reflecting the federal agency’s involvement in the inquiry.

At a Monday news conference, Commissioner Tisch said: "I can confirm this morning that this is being investigated as an act of ISIS-inspired terrorism." Her statement indicates that investigators are treating the incident through the lens of terrorism potentially motivated or inspired by ISIS, while the inquiry continues.

Authorities have not announced any formal charges tied to the alleged actions of the two people currently held, and details about the specific nature of the devices beyond their classification as improvised explosive devices have not been provided publicly. Officials have also not disclosed additional investigative findings or any conclusions about the motive beyond the characterization by Tisch.

As the investigation proceeds, law enforcement coordination between city and federal authorities will remain central. The involvement of federal prosecutors and the FBI’s Joint Terrorism Task Force signals the case will continue to be examined at multiple jurisdictional levels while prosecutors and investigators evaluate evidence and potential charges.

Risks

  • Determination of an operational link to ISIS remains under investigation - the inquiry has not yet produced publicly disclosed conclusions.
  • Two people are in custody but have not been charged, leaving legal outcomes and potential prosecutions uncertain.
  • Details about the devices and the full scope of the incident have not been released, which limits understanding of immediate security implications.

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