A pro-Morsi protest near the defence ministry in Cairo was dispersed by police on Thursday.
The rally organised by Ain Shams University students was en route to the ministry when it was dispersed by security forces using teargas and water cannons.
Hundreds of Ain Shams and Al-Azhar students blocked traffic on Khalifa Al-Mamoun Street.
They chanted against the police and army, demanded Mohamed Morsi's reinstatement and the release of students arrested at recent protests.
Students threw stones at the police but were eventually dispersed.
Dozens of students were arrested for taking part in an illegal protest and blocking traffic.