New York City Police Commissioner, Jessica Tisch is labeling a device hurled during a Saturday protest a terrorist attack inspired by the Islamic State.

As noted by theNew York Post, conservative protesters were marching Saturday afternoon outside of Gracie Mansion, the official home of New York City’s mayors, when a device was hurled towards them by a counter-protester.

The device, which began to smoke, caused panic at the scene but did not detonate. The individuals who were responsible for throwing the device were taken into custody Saturday.

Device hurled at Gracie Mansion protest determined to be highly dangerous IED capable of ‘serious injury or death’: NYPDhttps://t.co/nOlyv1sf2Qpic.twitter.com/2Q717Jb98d

— New York Post (@nypost)March 8, 2026

On Monday Tisch declared the incident terrorism, according toThe New York Times.

Tisch said that an analysis of one device showed it contained a compound called TATP.

Tisch said the substance was “a dangerous and highly volatile homemade explosive used in IED attacks around the world.”

BREAKING: NYC protest attack being investigated as ‘act of ISIS-inspired terrorism,’ NYPD Commissioner Jessica Tisch says.

Tisch confirmed the devices used were IEDs capable of causing ‘serious injury or death.’pic.twitter.com/kTDtZ1MD2z

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