The NYPD revealed on Sunday that another suspicious device has been found amid their investigation into an improvised explosive device (IED) tossed during conflicting protests outside Gracie Mansion the previous day.

Authorities reported that officers discovered the questionable device inside a car located on East End Avenue between 81st and 82nd streets. In response, they temporarily evacuated nearby buildings while the Bomb Squad evaluated the potential threat.

“The NYPD has safely extracted the suspicious device from the vicinity for additional testing. Residents who were evacuated are now permitted to return to their homes. However, the area remains closed to vehicle traffic,” the NYPD stated on X.

By Sunday evening, federal sources informed Fox News that only one of the devices had been confirmed as an IED.

A statement from the NYPD highlighted the discovery of a third suspicious device in their ongoing probe into an IED incident during the protests outside Gracie Mansion. (Fox News)

Earlier on Sunday, city officials indicated that the confirmed device had the potential to inflict “serious injury or death.”

The incident unfolded Saturday morning near East End Avenue and East 87th Street, steps from Gracie Mansion, the official residence of New York City Mayor Zohran Mamdani.

One protest was organized by right-wing activist Jake Lang to oppose public Muslim prayer. Counter-protesters also gathered nearby. Although police initially kept the groups separated, tensions escalated after pepper spray was deployed during a confrontation.

Approximately 30 minutes later, authorities say an 18-year-old counter-protester ignited and threw a device toward the protest area. 

Police say the 18-year-old then retrieved a second device from a 19-year-old, lit it, and attempted to flee. Both suspects — Emir Balat and Ibrahim Kayumi — were taken into custody.

Police said officers identified a suspicious device inside a vehicle on East End Avenue between 81st and 82nd streets and temporarily evacuated nearby buildings while the Bomb Squad assessed the threat. (Peter Gerber)

Three federal law enforcement sources told Fox News that one suspect allegedly shouted “Allahu Akbar” before igniting and throwing the IED into a crowd.

The devices thrown near Gracie Mansion were allegedly charged with TATP (triacetone triperoxide), retired NYPD inspector Fox News contributor Paul Mauro told Fox News Digital, citing multiple sources.

“[TATP] is a favorite of real terrorists, and not something two street-level knuckleheads would likely produce,” Mauro said. “This was no M-80 wrapped in nails and tape. It’s very hard to detect, very powerful, and extremely unstable.”

The NYPD Bomb Squad X-rayed two of the devices and rendered them safe. They are now being transported to Quantico for further analysis, Mauro said. 

He also noted that a vehicle registered to a relative of one of the suspects was located in the Upper East Side area.

A man throws a handmade explosive at supporters of U.S. President Donald Trump during a rally to stop public Muslim prayer, in New York City, U.S., March 7, 2026.  (REUTERS/Eduardo Munoz)

Mayor Zohran Mamdani has not issued a public statement about the bomb incident, but condemned protester Jake Lang, who he called a “White supremacist.”

“Yesterday, white supremacist Jake Lang organized a protest outside Gracie Mansion rooted in bigotry and racism. Such hate has no place in New York City. It is an affront to our city’s values and the unity that defines who we are,” Mamdani said.

Lang claims the bombs were thrown at him and his supporters by pro-Islam protesters.

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