A Tunisian court has convicted two veiled students of destroying public property at the office of a university dean they accused of slapping one of them.

The court dropped the case against the dean of the faculty of humanities at Manouba University, ruling on Thursday that there was no proof of an assault.

The court handed down suspended prison sentences for the women of four and two months.

The March 2012 incident triggered demonstrations at the university on the outskirts of Tunis by Salafis, who follow an ultraconservative strand of Islam.

At one point, the university suspended classes for nearly two months.