CAIRO (AP) — A series of three bombs went off Wednesday outside Cairo University, killing a police general and wounding seven people, introducing a new level of violence to the almost daily battles at campuses fought by Egyptian police and students loyal to the ousted Islamist President Mohammed Morsi.

Universities have emerged as the main center of the campaign of protests by Morsi’s supporters against the military-backed government that replaced him, because a fierce crackdown the past nine months has made significant rallies by Islamists in the streets nearly impossible.