Updated

Egyptian security forces have used tear gas and water cannons to disperse students and supporters of the country's ousted Islamist president after they rallied outside a Cairo university.

The supporters of toppled President Mohammed Morsi held a rally Thursday to denounce a harsh court verdict against a group of young female protesters. The protests came in defiance of a new law criminalizing protests held without police permits. Violators face fines and prison terms.

The law sparked a wave of anger among liberals and youth groups, as well as allies of the military-backed interim government. Police arrested dozens of activists after breaking up their protests Tuesday in their first use of the new law.

Egypt has been gripped by protests since a July 3 coup ousted Morsi.