Multiple people were burned, some severely, in an attack Sunday on Boulder’s Pearl Street Mall during a vigil calling on Hamas to release Israeli hostages. The FBI director characterized the incident as a “targeted terror attack,” although Boulder police said it was too early in their investigation to confirm a motive. One person, an unidentified man whom bystanders pointed out to officers, was arrested, Boulder police Chief Steve Redfearn said. Investigators are working to identify the suspect, he added. The Anti-Defamation League said on social media that it was aware of an attack on an event called Boulder Run for Their Lives — which it said was “a weekly meeting of Jewish community members to run/walk in support of the hostages kidnapped on 10/7,” a reference to Hamas’ large-scale attack on Israel on Oct. 7, 2023. Several people were injured in the attack, which occurred near the Boulder County Historic Courthouse at Pearl and 13th streets in downtown, the Boulder Police Department said on social media. Redfearn was unable to specify the number of people who were hurt, but said in a Sunday afternoon news briefing that the extent of their injuries ranged from minor to life-threatening.