Brussels University (ULB) will file a police complaint against students involved in a violent protest against Israel's war in Gaza, including an assault on the Jewish students union leader, rector Annemie Schaus said on Belgian radio on Wednesday. "A complaint will be filed because there were acts of violence, and in particular against the president (of the Union of Jewish Students of Belgium). And I cannot tolerate that," she told RTBF radio. The complaint will seek to hold the perpetrators accountable for their actions, Schaus added. She said calm returned to the ULB campus on Tuesday after security services intervened to stop what witnesses told local media was an assault on the Jewish students union chief, with a few protesters shouting antisemitic slurs. The Union of Jewish Students of Belgium condemned the assault. Its leader was not seriously injured.