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.

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

The FBI revealed that the suspect set walk participants on fire using "a makeshift flamethrower" and also threw an incendiary device into the crowd.