Multiple people injured in Boulder, Colorado, attack on demonstration for Israeli hostages

Several people suffered burns after an incendiary device was thrown at the Run for Our Lives group.
Bomb squads set up a staging area following an incident involving multiple injuries that the FBI is investigating as an act of terror on June 1, 2025 in Boulder, Colorado. A suspect is in custody after reportedly throwing an incendiary device at a group participating in an organized walk near the courthouse to show solidarity with hostages held by Hamas in Gaza. (Chet Strange/Getty Images)

(JTA) — Multiple people were burned and injured in Boulder, Colorado, in what the local Jewish community said was a firebombing attack on people who had gathered to draw attention to the Israeli hostages being held by Hamas in Gaza.

An eyewitness account posted by a pro-Israel X user said that most of the victims were in their 70s. Video from the scene shared on social media showed smoke and people on the ground. Screaming was audible. Another video showed a shirtless man, holding spray bottles, yelling, “End Zionists.”

An adult male suspect was arrested but police declined to name him or speculate on his motive in the hours after the incident. Without offering details, FBI Director Kash Patel posted that his agency was investigating what he said was a “targeted terror attack.”

The incident took place shortly after 1 p.m. on the Pearl Street Mall in downtown Boulder, which hosts the city’s Run for Our Lives. The weekly walks are held in communities around the world to sustain attention to the hostages being held by Hamas.

It comes 10 days after a pro-Palestinian activist shot and killed two attendees of an event held at the Capital Jewish Museum in Washington, D.C.

“We are saddened and heartbroken to learn that an incendiary device was thrown at walkers at the Run for Our Lives walk on Pearl Street,” local Jewish leaders, including rabbis, said in a statement distributed by the Boulder Jewish Community Center. They added, “Our hearts go out to those who witnessed this horrible attack, and prayers for a speedy recovery to those who were injured.”

Boulder Police Chief Stephen Redfearn said at a press conference that the initial emergency call had said people were being set on fire and that multiple people had been transported to hospitals with injuries “fairly consistent” with that description. He said the injuries ranged from minor to severe and potentially life-threatening.

Redfearn confirmed that “a group of pro-Israel people” had been gathered in the area but said it was too early yet to say whether they had been targeted. He said that if an investigation shows that any group was targeted, the police department would seek to safeguard them in the future.

“I cannot confirm right now that this was targeted at a specific group of people,” he said. “We understand that there’s a lot of tensions right now and a lot of issues in the United States and everywhere. Once we have a clear motive, we will react accordingly. And if that motive was a group that’s targeted, we will absolutely step up and ensure that additional security, additional presence.”

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