“Upon our arrival, we found multiple individuals suffering from burn-related injuries and other harms,” stated Boulder Police Chief Stephen Redfearn on Sunday.

A group of pro-Israel demonstrators were taking part in a peaceful demonstration, Redfearn added.

Redfearn told reporters that it was too early to discuss a motive but that witnesses were being interviewed.

“It would be irresponsible for me to speculate on motive this early on,” he said.

“We are thoroughly investigating what we believe to be a targeted terror attack in Boulder, Colorado. Our agents and local law enforcement have already arrived at the scene, and we will provide updates as new information emerges,” FBI director Kash Patel shared in a social media message on Sunday.

FBI personnel are at the scene along with local law enforcement, according to FBI Deputy Director Dan Bongino.

“We are investigating this incident as an act of terror, and targeted violence,” Bongino posted to social media.

“All of the necessary assets will be dedicated to this investigation.”

Boulder Police said they were evacuating several blocks of the typically popular pedestrian mall area, saying that there were “several victims” in the attack without providing further details.

The reported attack took place at the Boulder Run for Their Lives event, the Anti-Defamation League said on social media.

The weekly gathering of Jewish community members is meant to support the hostages taken during the October 7 attacks in Israel in 2023.

The incident happened ahead of the holiday of Shavuot, according to the ADL – a Jewish holiday which celebrates the giving of the Torah to the Jewish people on Mount Sinai.

Colorado Governor Jared Polis said in a statement that he was “closely monitoring” the situation, adding that “hate-filled acts of any kind are unacceptable.”