The FBI and the U.S. Department of Homeland Security has issued an alert after violent attacks on Jewish and Israeli communities. Incidents in Colorado and Washington D.C. have prompted federal warnings about rising threats of violence linked to the Israel-Hamas conflict.

The suspect, Mohammed Sabry Soliman, accused of throwing incendiary devices at them, allegedly planned the attack for a year, and told police he wanted to "kill all Zionist people," according to court documents.

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 man who authorities say firebombed a group in Boulder, Colorado, demonstrating for the release of Israeli hostages, has been charged in state court with over 100 counts, including attempted murder and assault.