Soliman was arrested and taken to the hospital for treatment, but authorities didn’t elaborate on his injuries.
Here is what we know about the attack:How the attack unfolded
Soliman attacked demonstrators with a volunteer group called Run for Their Lives, which organises run and walk events to call for the immediate release of the Israeli hostages who remain in Gaza since a war between Israel and Hamas sparked in 2023, authorities said.
Read more: Who is Mohamed Sabry Soliman, the suspect behind the Colorado firebomb attack
The group had gathered at the Pearl Street pedestrian mall, a four-block area in downtown Boulder popular with tourists and students.
The Israel-Hamas war continues to inflame global tensions and has contributed to a spike in antisemitic violence in the United States. It occurred more than a week after the fatal shooting of two Israeli embassy staffers in Washington by a Chicago man who yelled “I did it for Palestine, I did it for Gaza” as he was being led away by police.
Police in Boulder evacuated multiple blocks of the pedestrian mall. The scene shortly after the attack was tense, as law enforcement agents with a police dog walked through the streets looking for threats and instructed the public to stay clear.
“Our agents and local law enforcement are on the scene already, and we will share updates as more information becomes available,” FBI Director Kash Patel posted on social media.The violence comes four years after a shooting rampage at a grocery store in Boulder, about 25 miles (40 kilometers) northwest of Denver, that killed 10 people. The gunman was sentenced to life in prison for murder after a jury rejected his attempt to avoid prison time by pleading not guilty by reason of insanity.
Read more: ‘Free Palestine’: Man attacks group seeking release of Israeli hostages in Colorado
Several people hospitalised
Those injured range in age from 67 to 88, officials said. All were hospitalised. Photos from the scene showed a woman lying on the ground in the fetal position with her hair soaked, and a man helping her and getting water from someone with a water jug.
The injuries authorities found were consistent with reports of individuals being set on fire, Boulder Police Chief Steve Redfearn said, adding that injuries ranged from serious to minor.
Redfearn told reporters on June 1 evening that it was too early to discuss a motive but that witnesses were being interviewed. “It would be irresponsible for me to speculate on motive this early on,” he said.
Who is Mohamed Sabry Soliman?
Mohamed Sabry Soliman, 45, was arrested at the scene. No charges were immediately announced but officials said they expect to hold him “fully accountable.” Video from the scene showed him shirtless and wearing jeans and holding two clear bottles with a transparent liquid in them while shouting at onlookers.
Another video shows a witness shouting, “He’s right there. He’s throwing Molotov cocktails,” as a police officer with his gun drawn advanced on the suspect.
FBI leaders in Washington said they were treating the Boulder attack as an act of terrorism, and the Justice Department — which leads investigations into acts of violence driven by religious, racial or ethnic motivations — decried the attack as a “needless act of violence, which follows recent attacks against Jewish Americans.”
“This act of terror is being investigated as an act of ideologically motivated violence based on the early information, the evidence, and witness accounts. We will speak clearly on these incidents when the facts warrant it,” FBI Deputy Director Dan Bongino said in a post on X.
