A Belgian man who allegedly killed four people on Tuesday carried out a “terrorist murder” and may have intended to hurt more people, according to authorities. Benjamin Herman attacked two police officers in Liege, stabbing them repeatedly and taking their guns away from them, officials said. Herman then allegedly shot the two officers and a 22-year-old man who was a passenger in a vehicle. He also took a cleaning worker hostage, authorities said. When police closed in, Herman started running and firing before being shot to death by police, according to officials. Law enforcement said they later discovered that he killed a former prison inmate who did time with him on Monday night. Prosecutors claim he yelled “Allahu akbar” various times during his attack, and say that he was due to be back in prison Tuesday evening after a two-day furlough. Federal magistrate Wenke Roggen also said that Herman’s actions follow the demands of the Islamic State, which has pushed followers to stab policemen and steal their weapons.