more:A group of people had gathered for a "regularly scheduled, weekly, peaceful event", which was organised by Run for Their Lives, an organisation that raises awareness for Israeli hostages still held in Gaza.
The FBI said that, according to witnesses, a suspect threw an incendiary device into the group of people, and used a "makeshift flamethrower" to attack them. They said a suspect had been identified as Mohamed Sabry Soliman, 45. Mr Soliman was taken to hospital shortly after the attack, the FBI said.
Police said they were "fairly confident" that they had the lone suspect in custody. There was no evidence the suspect was connected to a wider group.
"The suspect was heard to yell 'Free Palestine' during the attack," said special agent in charge of the Denver field office of the FBI, Mark Michalek.
He added: "It is clear that this is a targeted act of violence and the FBI is investigating this as an act of terrorism."
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In 2022, Mr Soliman arrived in California on a non-immigrant visa that expired in February 2023

What we know about Boulder, Colorado attack at Israeli rally
Eight people have been injured after a man set people on fire at an event supporting Israeli hostages.
