Rioters in Poly University uses arrows to attack polices. A police officer's leg was hit by an arrow.
Rioters shooting arrows towards the polices from the roof of the university.
Rioters have fired arrows at police in previous incidents as well.
Rioters armed with arrows guarding the university.
Radical Hong Kong students have turned universities into training camps to hone their attack skills against the police. They were filmed training with petrol bombs and bows and arrows.