Clashes have broken out at the University of Dakar between police officers and students attempting to take part in a demonstration banned by the authorities on the eve of the trial of the opponent Ousmane Sonko.
Deployed en masse around the university, the police sent tear gas in the direction of students locked inside the campus.
The students retaliated with stones, but were prevented from leaving.
A journalist who was present with several colleagues before the incidents began was punched in the back of the head by a police officer who ordered them to leave, accusing them of filming.
The journalist was then apprehended and forcibly taken away in a police van, despite attempts by his colleagues to intercede on his behalf.
