Residents of New York City are on high alert after authorities uncovered additional explosives reportedly found in a storage unit that was searched in connection with the terror suspects who threw improvised explosive devices (IEDs) at a group of protesters outside New York City’s Gracie Mansion — the official residence of New York City Mayor Zohran Mamdani
FBI agents searched the storage unit in Middletown Township, Pennsylvania on Monday as part of the ongoing investigation, and local authorities shared information about what had been discovered in a Tuesday Facebook post.
“Update Regarding Overnight Activity at Local Storage Facility,” the Middletown Township Police Department titled the post.
“Last night, residents in the area of the storage facility on S. Flowers Mill Road may have heard several loud bangs during the overnight hours.”
“As part of the ongoing federal investigation that took place yesterday, the FBI safely disposed of explosive materials that were recovered during the execution of search warrants. These controlled detonations were conducted by trained personnel and were carried out in a controlled manner,” the post continued.
“While the noise may have been startling to some residents, there was no danger to the public at any time. The operation at the storage facility has now concluded and the location has returned to normal operations. We appreciate the community’s patience and understanding while federal authorities conducted this investigation.”
Middletown Township, a suburb northwest of Philadelphia, is the same general area from which bombing suspects Emir Balat, 18, and Ibrahim Kayumi, 19, had come, according to reports.
It was also discovered that Balet purchased materials used in the attack just days beforehand at a Pennsylvania fireworks store, according to reports.
According to surveillance video obtained by CBS News Balat, 18, allegedly bought a roll of safety fuse at a Phantom Fireworks store in Penndel, Pennsylvania, on March 2, just five days before the incident near Gracie Mansion.
Emir Balat, the 18-year-old Muslim from Pennsylvania charged with terrorism for throwing two homemade bombs into a anti-Muslim crowd near Gracie Mansion on Saturday, reportedly bought the fuse used in the devices at Phantom Fireworks in Penndel, a Philadelphia suburb, on March 2.… pic.twitter.com/EHBslRqvyz
— Breaking911 (@Breaking911) March 10, 2026
The FBI is investigating the attack as a potential act of terrorism.
In a statement on Monday, FBI Director Kash Patel said, “The defendants allegedly support ISIS and tried to follow the path of that deadly group by attempting to detonate explosive devices in a crowd. The FBI and our partners have no tolerance for terrorist organizations or those inspired by them to engage in attacks. We are committed to stopping acts of violence and will hold accountable those who seek to harm our citizens.”
According to authorities, Balat also told law enforcement that he’d intended to inflict more damage than the Boston Marathon bombers, lamenting the fact that they had only killed three people.
On Monday, Attorney General Pam Bondi announced charges against Balat and Kayumi, whom she called “the two alleged ISIS-inspired terrorists,” adding, “We will not allow ISIS’s poisonous, anti-American ideology to threaten this nation.”
New York City has been at the center of several scares in recent days, with law enforcement blocking off part of the Upper East Side on Sunday when a suspicious device was found in a vehicle near where the suspects had first attacked.
We have charged the two alleged ISIS-inspired terrorists who attempted to bomb a protest in New York City.
We will not allow ISIS’s poisonous, anti-American ideology to threaten this nation. Our law enforcement officers will remain vigilant. pic.twitter.com/4QMOrOvGhG
— Attorney General Pamela Bondi (@AGPamBondi) March 9, 2026
This is an ongoing story. Check back for further updates.