Mohamed Reda, 19, was shot and killed 10 days ago during clashes with authorities as he and other students protested harsh prison sentences given to female supporters of ousted president Mohamed Morsi.
Students pitched tents near the offices of the Faculty of Engineering Sunday, walked the campus holding pictures of Reda and hung signs denouncing the police, Ahram Online said.
The students said the sit-in would not end until those responsible for the death are brought to justice.
Gaber Nassar, the head of the university, said security forces stormed the campus, using tear gas and firearms against the students.
But the Interior Ministry denies the allegation, and the general prosecutor's office said in a statement that Reda was shot by fellow student protesters.
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