Police in Boulder, Colorado, are responding to a "heinous" attack at a pedestrian mall in the city that they say left several victims, including some that appear to be life-threatening. A suspect was taken into custody without incident, police said. While many of the details were not immediately clear, FBI Director Kash Patel said officials were investigating the incident as a "targeted terror attack." "Our agents and local law enforcement are on the scene already, and we will share updates as more information becomes available," Patel said. Colorado Gov. Jared Polis also called the attack a "heinous act of terror." "Hate-filled acts of any kind are unacceptable. While details emerge, the state works with local and federal law enforcement to support this investigation," Polis wrote on X. Boulder police, while calling the attack a "tragedy" and "unacceptable" were not yet at the point of labeling it terror, Chief Stephen Redfearn said. The incident occurred just before 1:30 p.m. on Sunday at the intersection of 13th Street and Pearl Street. There was a group of people participating in a pro-Israel peaceful demonstration when that attack occurred, Redfearn said. But it was not immediately clear what group was targeted in the attack. Police responded to reports of a man with a weapon and that people were being set on fire. When they arrived, there were multiple victims at the scene with injuries consistent with burns, police said. Police were still investigating how the injuries occurred, according to Redfearn. Police said the scene has been contained but have evacuated the area from Broadway to the west, Pine Street to the north and 16th Street to the east and Walnut Street to the south. The scene was not yet safe, Redfearn said. This is a developing story. Please check back for updates. FBI investigating attack in Boulder, Colorado, as 'act of terror'originally appeared onabcnews.go.com