Fury marks Mursi anniversary Egypt's rival groups clash, as cleric warns of 'civil war' Clashes in the Egyptian city of Alexandria between supporters and opponents of President Mohammed Mursi left one man dead and 70 others reported injured, as the country's top cleric warns of "civil war." Egypt's rival political factions stood on the brink of all-out conflict on Saturday after supporters and opponents of the President staged rival demonstrations and an influential religious body warned that the country risked civil war. The US warned Americans not to travel to Egypt and told non-emergency diplomatic staff to leave. Amid rising tensions in the run-up to Mohammed Mursi's first anniversary in power, violent clashes between pro- and anti-president groups left three people dead and dozens injured. Fanning the flames: Opponents of President Mohammed Mursi protest outside the Muslim Brotherhood headquarters in Alexandria. A 21-year-old US citizen who reportedly worked for an American cultural centre in the coastal city of Alexandria was killed as he took photographs of a demonstration, officials said. Another man was killed earlier during Friday's clashes in Alexandria. In the canal city of Port Said, an Egyptian journalist was killed and several others injured after someone threw a small bomb at anti-Mursi protesters, a security official and witnesses said. Television footage showed people running in several directions in Alexandria's Sidi Gaber area against a backdrop of gunfire. Violence was reported to have erupted overnight in Dr Mursi's home province of Sharqiya. Clashes also erupted in the Nile Delta provinces of Daqahliya and Beheira, and across the country more than 130 people were wounded, security officials said. The offices of the Freedom and Justice Party, the political arm of Dr Mursi's Muslim Brotherhood, were torched in Alexandria and at Aga in Daqahliya, and its offices were stormed in Beheira. The unrest prompted a rare intervention from the normally apolitical al-Azhar clerical institution, which said: "Vigilance is required to ensure we do not slide into civil war." The institution also condemned "criminal gangs" for attacking mosques and called on the opposition to accept the President's offer of a national dialogue. The renewed upheaval follows increased discontent from Dr Mursi's opponents, who accuse the President of hijacking the 2011 revolution that toppled the dictator Hosni Mubarak. Opposition forces have vowed to stage a rally in Cairo's Tahrir Square on Sunday - a year since Dr Mursi's election. Organisers say they have collected a 15-million signature petition calling for the end of his rule. In Cairo, thousands of the President's supporters gathered outside the main mosque in the Nasr district while demonstrations against Dr Mursi were staged in Tahrir Square. Telegraph, London; AFP