Thirty students were arrested during clashes between students and security forces at Alexandria University's engineering faculty, according to an interior ministry statement on Tuesday.
One student was injured, officials told Al-Ahram's Arabic news website, while other reports say more were hurt in the clashes.
Security forces stormed the university at the request of the university's president, after hundreds protested for the release of their colleagues who were detained earlier in the week.
Police fired teargas to disperse the protests; students claim they fired birdshot and ammunition.
The students damaged the university's gates and threw rocks at the security forces, according to the interior ministry's statement.
Tens of students protested at the university on Sunday to call for the release of their detained colleagues and chant against the police and the army, as well as shoot off fireworks.
Students demonstrated at several Egyptian university campuses on Sunday for the same reasons. Security forces entered Cairo University and Al-Azhar University's campuses to disperse the protests.
Egyptian universities witnessed violent clashes between students and security forces last year after the ouster of Islamist president Mohamed Morsi, during which hundreds were arrested for rioting and illegal protests and at least were 14 killed.
Tens of police officers and conscripts were injured in the events.