Police arrested six people after a smoke-generating “suspicious device” was thrown during a protest at the New York City mayor’s residence Saturday.

It was not immediately known if Mayor Zohran Mamdani or his wife, Rama Duwaji, were inside Gracie Mansion at the time. Mamdani, the city’s first Muslim mayor, had no public events announced but was in the city, according to his public schedule released Friday night.

A left-wing activist holds a homemade explosive device before throwing it towards police during a protest organized by far-right influencer Jake Lang against alleged “Islamification,” in front of Gracie Mansion, on March 7, 2026, in New York.

Charly Triballeau/AFP via Getty Images

Police sources told ABC News that the anti-Muslim protest was organized by a “known agitator.”

The NYPD bomb squad was investigating if the device was a smoke bomb, after some smoke started coming out of the device before the crowd was moved back, sources said.

A left-wing activist flees after throwing a homemade explosive device towards police during a protest organized by far-right influencer Jake Lang against alleged “Islamification,” in front of Gracie Mansion, on March 7, 2026, in New York.

Charly Triballeau/AFP via Getty Images

No injuries were reported during the incident.

PHOTO: A left-wing activist is handed a homemade explosive device by a fellow activist before throwing it towards police during a protest in front of Gracie Mansion, on March 7, 2026, in New York.

A left-wing activist is handed a homemade explosive device by a fellow activist before throwing it towards police during a protest organized by far-right influencer Jake Lang against alleged “Islamification,” in front of Gracie Mansion, on March 7, 2026, in New York.

Charly Triballeau/AFP via Getty Images

The mayor’s office did not immediately return messages to ABC News for comment.

Two unidentified people arrested were accused of throwing a suspicious device, police sources said.

A man is arrested after throwing a hand-made smoke grenade at a protest near Gracie Mansion, on March 7, 2026, in New York.

Ryan Murphy/Getty Images

One person was arrested for disorderly conduct and another person was arrested for deploying pepper spray, according to sources.

<i>This is a developing story. Check back for updates.</i>