Fifteen people were injured at an outdoor mall in Boulder, Colo., by a man police say attacked demonstrators with makeshift incendiary devices and a flamethrower while they were calling for the release of Israeli hostages in Gaza.

Colorado Gov. Jared Polis and community leaders gathered for a vigil Wednesday for the victims of a violent attack​ against a group marching to bring awareness to Israelis held captive in Gaza.

Mohamed Sabry Soliman, 45, has been charged with first-degree murder and a federal hate crime, records show, after the attack on a vigil in Boulder, Colorado, for Israeli hostages held by Hamas in the Gaza Strip.