CAIRO (AP) — Hundreds of Egyptian students angered by a mass outbreak of food poisoning at a Cairo university stormed on Tuesday the offices of the country’s top Muslim cleric, who presides over the institution.

The Monday outbreak at al-Azhar University forced the hospitalization of 479 students, health ministry official Khaled el-Khateib said. It occurred after a meal served at the university dormitories in Cairo’s Nasr City district.