BOULDER — Eight people marching in support of Israeli hostages held in Gaza were burned Sunday by a man wielding what authorities called a “makeshift flamethrower” and an incendiary device.

The attack happened at 1:26 p.m. on Boulder’s Pearl Street Mall, during a weekly walk organized by the city’s chapter of Run for Their Lives, which calls for the release of hostages held by the terrorist group Hamas.

Mark Michalek, special agent in charge of the FBI’s Denver field office, characterized the incident as a “targeted act of violence” and said in a Sunday evening news briefing that it’s under investigation as terrorism, echoing a statement from FBI Director Kash Patel earlier in the day.

Police arrested Mohamed Sabry Soliman, 45, of El Paso County, after bystanders pointed him out to poli

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