NYPD says device near Zohran Mamdani’s residence is non-threatening

Lead

On Tuesday, March 10, 2026, the New York Police Department concluded that a suspicious device reported near Gracie Mansion — in Carl Schurz Park on Manhattan’s Upper East Side — was not a threat to public safety. Authorities closed nearby streets and the park while bomb technicians assessed the item and later declared it non-threatening. The development came days after homemade explosives were thrown during a protest outside Mayor Zohran Mamdani’s residence on Saturday, March 7. Federal agents have since reported explosive residue in a Pennsylvania storage unit linked to the earlier incident, and two teenagers have been charged in that case.

Key Takeaways

• Location and timing: The device was reported March 10, 2026 near Carl Schurz Park adjacent to Gracie Mansion on the Upper East Side; East End Avenue between East 85th and East 87th and nearby blocks were temporarily closed.
• Initial assessment: NYPD bomb technicians examined the item and determined it posed no safety risk; the department described the response as a routine instance of public vigilance.
• Connection to prior attack: The incident followed a March 7 demonstration during which two men allegedly threw improvised explosive devices outside Mamdani’s home; neither of those devices detonated.
• Federal findings: The FBI said explosive residue was found in a Pennsylvania storage unit believed to be connected to the March 7 attack; agents performed a controlled detonation for safety.
• Criminal charges: Federal authorities charged two teenagers — 18-year-old Emir Balat and 19-year-old Ibrahim Kayumi — with offenses including terrorism and use of a weapon of mass destruction, according to a criminal complaint filed in the US Southern District of New York.
• Alleged motive: The complaint alleges both defendants declared allegiance to the Islamic State, and the NYPD commissioner described the case as ISIS-inspired terrorism.
• Official responses: Mayor Zohran Mamdani thanked NYPD and Bomb Squad personnel for rapid action; law enforcement agencies, including the FBI Philadelphia office, said they were coordinating on the investigation.

Background

The March 7 demonstration, organized by a far-right influencer under the name “Stop the Islamic Takeover of New York City,” drew roughly 20 people and prompted counter-protests. Authorities say the incident outside Gracie Mansion escalated when two individuals identified as counter-protesters allegedly threw improvised explosive devices at demonstrators. The NYPD and federal prosecutors rapidly opened complementary inquiries given the nature of the devices and alleged statements of allegiance to a foreign terrorist organization.

Gracie Mansion is the official residence of New York City’s mayor and has been a focal point for protests and security operations for decades, prompting sustained attention from city police and federal partners. The proximity of public parkland — Carl Schurz Park sits immediately adjacent to the mansion — complicates security planning because of open sightlines, pedestrian traffic, and recreational use. In this context, authorities treat suspicious items near the residence with heightened caution.

Main Event

On March 10, 2026, reports of a suspicious device near Carl Schurz Park prompted NYPD units and bomb technicians to secure the scene and temporarily close nearby streets and park entrances to both vehicles and pedestrians. The department posted advisories on social media noting the closures and urging the public to avoid the area. After examination, bomb squad personnel concluded the item was non-threatening and the closures were lifted.

Mayor Zohran Mamdani issued a statement on social media confirming that the suspicious device had been located near Gracie Mansion, that law enforcement had secured the area, and that authorities determined the device did not present a safety risk. He publicly thanked NYPD officers and bomb squad members for their swift response. The city framed the incident as an example of residents heeding the “see something, say something” message and of first responders acting decisively.

Separately, the FBI said agents working with local bomb squads located explosive residue in a storage unit in Pennsylvania thought to be linked to the March 7 attack. FBI and local bomb technicians conducted a controlled detonation at that site to ensure the safety of personnel and the public. Officials described coordination between the FBI’s New York office, the Philadelphia field office, and local law enforcement as ongoing.

Federal prosecutors filed a 10-page criminal complaint in the Southern District of New York charging Emir Balat, 18, and Ibrahim Kayumi, 19, with offenses that include terrorism-related counts and use of a weapon of mass destruction. The complaint states Balat threw the devices after receiving them from Kayumi, and alleges both men declared allegiance to the Islamic State. Both suspects were taken into custody shortly after the March 7 incident and the devices involved in that attack were rendered safe by the NYPD bomb squad.

Analysis & Implications

The sequence of events — a Saturday attack involving improvised explosives followed by a Tuesday report of a suspicious item near the mayor’s residence — underscores the persistent security challenges when political protests intersect with private residences and public spaces. Even items ultimately judged non-threatening force rapid mobilization of specialized units, which strains resources and disrupts daily life in dense urban neighborhoods. The visible federal involvement signals that authorities are treating the earlier attack and related leads as potential federal terrorism matters, which can broaden investigative scope and prosecutorial options.

The criminal charges against two teenagers under terrorism and weapons statutes raise questions about radicalization pathways for young people and the role of online networks or influencers in fomenting real-world violence. If the allegation of declared allegiance to the Islamic State is substantiated in court, prosecutors may seek enhanced penalties under statutes designed to address ideologically motivated violence. At the same time, defense counsel are likely to contest the evidence, including the nature of the devices, intent, and the alleged declarations.

For city policy, the incidents could prompt renewed debate about protective measures around Gracie Mansion and other official residences — balancing the mayor’s access to public spaces with security requirements. Law enforcement agencies may press for targeted funding to sustain bomb squads and interagency fusion efforts. Politically, the episode could heighten tensions between civil liberties advocates who emphasize protest rights and officials who stress the need for robust security when threats are credible.

Comparison & Data

The timeline shows a compact sequence of events over four days: an initial alleged attack, follow-up investigative leads that crossed state lines, and a separate local report that required a bomb squad response but was not assessed as a threat. The federal involvement and interstate traces (a Pennsylvania storage unit) illustrate how local incidents can rapidly escalate into multi-jurisdictional investigations.

Reactions & Quotes

Officials and agencies gave terse public comments that emphasized both caution and appreciation for rapid response. The NYPD highlighted public vigilance and the operational role of its bomb technicians.

This was an instance of everyday New Yorkers following a clear message: if you see something, say something.

NYPD (social media advisory)

Mayor Mamdani framed the arrests and the safe handling of devices as the result of swift police action and expressed gratitude toward responders.

Thank you to the NYPD officers and Bomb Squad members who acted quickly to ensure New Yorkers are safe.

Zohran Mamdani (Mayor of New York City)

NYPD leadership described the broader investigation and signaled federal cooperation.

We can confirm this is being investigated as an act of ISIS-inspired terrorism.

Commissioner Jessica Tisch (NYPD, press briefing)

Unconfirmed

• It is not yet confirmed whether the suspicious device reported on March 10 is directly linked to the March 7 protest incident; investigators have not publicly established a chain of custody or forensic match.
• Details about who rented or had access to the Pennsylvania storage unit and how it connects to the defendants remain under investigation and have not been fully disclosed.
• Officials stated investigators were “aware” of recent international travel by the charged defendants, but the destinations, timing and relevance of any travel have not been publicly verified.

Bottom Line

The March 10 report near Gracie Mansion ended without public danger, but it followed a serious March 7 incident in which improvised explosive devices were allegedly deployed at a protest. Federal and local authorities are treating the case seriously: explosive residue has been found in a Pennsylvania storage unit and two teenagers face federal terrorism-related charges in the Southern District of New York.

Key watchers should monitor forthcoming court filings, forensic reports tying evidence across scenes, and official briefings about the interstate and international aspects of the investigation. The incidents underscore the strain on urban security when ideological violence and public protest intersect, and they may prompt policy and operational changes around protections for public officials and crowded public spaces.

Sources

• The Guardian (news media)
• NYPD official account (official social media advisory)
• FBI New York (official social media; statement on investigative actions)
• U.S. Attorney’s Office, Southern District of New York (federal court filings / press releases)