A student was ordered to leave UC Riverside after police said they searched an on-campus apartment and found an assault rifle, five high-capacity magazines and a journal with hand-drawn images of a violent act.
Tensions have escalated and arrests have been made as protesters continue to stake out areas on the campuses of many California universities, including UCLA, USC and Cal Poly Humboldt.
Pro-Palestinian encampments have sprung up on the campuses of UC Irvine, UC Riverside, Occidental College, Sacramento State and San Francisco State, among others.