CAIRO: Researchers of the complaining bureau of the National Council for Human Rights (NCHR) are conducting an investigation on the clashes that took place between vendors and demonstrators in Tahrir Square. The council will also hold a press conference tomorrow to announce the outcome of the fact finding committee on the incidents that took place in front of the Balloon Theater on June 28 and 29 between the families of the martyrs of the January 25 Revolution and security forces.