At least 12 people have reportedly been killed in the Egyptian city of Alexandria, as tensions continue to boil over the removal of President Mohamed Mursi. Violence erupted between Islamist supporters and opponents across the country. The unrest left at least 30 dead in all and many more wounded - according to officials. In Cairo, three hours of street fighting rocked the capital, with the 6th October bridge at the heart of the trouble. Five people were reported dead in the city. The army arrived with armoured vehicles to restore calm. Friday's fatalities added to the dozens of other deaths which have happened during a month of unrest. Egypt's first freely elected president was pushed from power by the army. More about: Egypt, Egyptian politics, Mohamed Mursi, Muslim Brotherhood, Opposition, Protests in Egypt