Dozens of Muslim Brotherhood students staged a protest in Zagazig University on Sunday to call for the release of their detained colleagues and the return of suspended ones.
The protesting students started the gathering outside the Faculty of Engineering and headed then outside the university campus.
They lit up fireworks heavily, causing panic among passersby and other students, and chanted slogans against the police and army.
Security forces fired teargas to disperse them and a student, allegedly one of the main inciters, was arrested after being caught on camera.