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.

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.

BOULDER, Colo. (AP) — Eight people calling for the release of Israeli hostages in Gaza were injured at an outdoor mall in Boulder, Colorado, by a man who police say used a makeshift flamethrower and hurled an incendiary device into a crowd. The FBI immediately described the violence as a “targeted terror attack.”