Description:Blood-stained seats, wrecked gates and abandoned shoes - the aftermath of the worst violence at a soccer match in Egypt's history. As Egypt's military rulers announce three days of national mourning, general prosecutor Abdel Majeed Mahmoud arrives in Port Said stadium to launch an initial investigation. Seventy-four people were reported killed and at least a thousand injured after rival fans clashed after a soccer match in the Mediterranean city on Wednesday.(2:06)