A man attacked and burned 12 people with Molotov cocktails and a makeshift flamethrower during a peaceful June 1 march in Boulder, CO, calling for the release of hostages held by Hamas in Gaza. The victims ranged in age from 67 to 88, and several were hospitalized, one with life-threatening injuries.

Arrested was Mohamed Sabry Soliman, 45, who was pointed out to law enforcement officers by witnesses. Witnesses described a horrific scene at a plaza located along a popular downtown promenade. The man arrested was seen lighting people on fire with gasoline and throwing Molotov cocktails.

The attack was quickly condemned by local and national elected officials. Jared Polis, Colorado’s Democratic governor, who is Jewish, said “it is unfathomable that the Jewish community is facing another terror attack, on the eve of the holiday of Shavuot.

The assault came roughly 10 days after a 31-year-old man was arrested for shooting and killing two Israeli Embassy staffers outside an event at the Capital Jewish Museum in Washington, D.C. Elias Rodriguez, the suspect in that case, allegedly said that he “did it for Gaza.”

People place flags and flowers outside the Boulder County Courthouse, where the flamethrower attacked those marching for the release of the hostages held in Gaza.                                                Chet Strange/Getty Images