CAIRO: Egyptian Public Prosecutor Abdel-Magid Mahmoud today opened an investigation into the violent action between Egyptian Central Security Forces and demonstrators in Tahrir Square. The Interior Ministry filed complaints against a number of demonstrators, accusing them of threatening the stability and security of the country and working toward terrorist objectives, a judicial source tonight reported. The defendants have been referred to the prosecution for investigation, but there is not evidence to support such accusations, some claim. The prosecution will likely investigate the incident area and hear testimony from those who witnessed the clashes.