A suspect carried out a "heinous" attack on a pedestrian mall in Boulder, Colorado, on Sunday afternoon, leaving multiple people hurt, including some who appeared to have life-threatening injuries. While the details were not immediately clear, police said the attack occurred where a pro-Israel demonstration was being conducted and that the injuries were consistent with people being burned. A suspect was taken into custody without incident, police said. FBI Director Kash Patel said officials were investigating the incident as a "targeted terror attack." The FBI believes the attack was "ideologically motivated violence," according to "early information, the evidence and witness accounts," Deputy Director Dan Bongino added. While police say it's too early to speculate on the suspect's motive, the attack in Boulder comes at a time of heightened violence, including high-profile incidents against the Jewish community. The pro-Israel demonstration was a Run for Their Lives walk, aiming to raise awareness about the remaining hostages in Gaza. The organization hosts global run and walk events, "calling for the immediate release of the hostages held by Hamas," according to its website. Leo Terrell, head of the antisemitism task force at the Justice Department, said that an "incendiary device" was thrown at participants in the Run for Their Lives walk. "This was not an isolated incident," Terrell continued. "This antisemitic terrorist attack is part of a horrific and escalating wave of violence targeting Jews and their supporters simply for being Jewish or standing up for Jewish lives," he said. The attack happened on the eve of a Jewish holiday, Shavuot, "making it all the more chilling and cruel," Terrell said. A spokesperson for the organization, Miri Kornfeld, said in a statement to ABC News that five people were burned, including an elderly woman whose clothes caught fire. Boulder Police did not have an exact number of victims, their conditions or how they were injured. Kornfeld -- who was not at the event when the attack occurred -- said a man who was leading the walk described the scene as "the floor burning beneath them." MORE: 2 Israeli Embassy staffers killed in 'act of terror' in Washington, DC All upcoming Run for Their Lives events have been canceled until further notice, Kornfeld said. President Donald Trump has been briefed on the "targeted terror attack," a senior White House official told ABC News. Colorado Gov. Jared Polis 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. Police responded to reports of a man with a weapon and that people were being set on fire. MORE: University presidents, Republican lawmakers spar over alleged antisemitism on campuses 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. As the investigation into the attack is ongoing, it comes amid a spate of targeted attacks involving the Jewish community. Last month, two Israeli Embassy staffers wereshot and killedin Washington, D.C. in what was labeled as an "act of terror." The shooting sparked outrage and has been condemned as an "unspeakable" act of antisemitism after officials said the suspect, who is in custody, shouted "free, free Palestine" following the shooting. MORE: Arson at Pennsylvania Gov. Josh Shapiro's residence was 'domestic terrorism': Fire chief In April, the residence of Pennsylvania Gov. Josh Shapiro, who is Jewish, wastargeted by an arsonistwho allegedly made two Molotov cocktails from Heineken bottles he had at home and threw them inside the governor's mansion after breaking a window with a hammer, according to court documents. The attack happened after the governor had posted about celebrating Passover with his family. This is a developing story. Please check back for updates. Boulder attack updates: Multiple people injured in 'act of terror,' FBI saysoriginally appeared onabcnews.go.com
