Protesters swamp streets to reclaim revolution Seven killed in Egypt clashes At least seven people have been killed and around 600 injured as protestors clashed with police in Egypt on the anniversary of the inauguration of President Mohamed Mursi. Egypt's opposition gave Mohamed Mursi a day to quit or face civil disobedience after deadly protests demanded the country's first democratically elected president step down after just a year in office. "We give Mohamed Mursi until 5pm on Tuesday July 2 to leave power, allowing state institutions to prepare for early presidential elections," the Tamarod movement said in a statement on its website. Otherwise, "Tuesday, 5pm will be the beginning of a complete civil disobedience campaign." President under siege: An Egyptian protester attacks the Muslim Brotherhood headquarters in Cairo. The health ministry said 16 people died in nationwide protests, including eight in clashes between supporters and opponents of Mursi outside the Muslim Brotherhood headquarters in Cairo. Another three died in the central province of Assiut and one each in Fayoum, Beni Sueif and Kafr el-Sheikh provinces. One protester suffocated to death at the rally outside the presidential palace in Cairo and another died of wounds in the coastal city of Alexandria, the ministry said. Egypt's ministers of tourism, environment, communication and legal affairs tendered their resignations on Monday, a senior government official told AFP. The four handed in their letters of resignation together to Prime Minister Hisham Qandil, the official said. Earlier on Monday, the seat of the powerful Brotherhood from which Mursi hails was set ablaze before people stormed and looted it, an AFP correspondent said. Looters left with petrol bombs, helmets, flak jackets, furniture, televisions and documents. This is a historic moment. The Brotherhood ruined the country, so stealing from them is justified," one told AFP. Tamarod -- Arabic for Rebellion -- is a grassroots campaign which says it collected more than 22 million signatures declaring a lack of confidence in Dr Mursi. It was behind Sunday's protests that saw millions of people demand his departure on the first anniversary of his inauguration. As Dr Mursi stood firm and insisted the only way forward was dialogue, calls for army intervention increased. Tamarod urged state institutions to support the protesters, calling on "the army, the police and the judiciary to clearly side with the popular will as represented by the crowds." Opposition leader Hamdeen Sabbahi urged military intervention if Dr Mursi refused to quit. The army, which led a tumultuous transition after Mr Mubarak, had already warned it would intervene if there was major unrest. "The armed forces must act, because they have always been on the side of the people" which "has expressed its will," said Sabbahi, who was third in the 2012 presidential election. The best outcome would be for Mursi to go willingly, he added. But Dr Mursi's spokesman Ehab Fahmy told reporters: "Dialogue is the only way through which we can reach an understanding ... The presidency is open to a real and serious national dialogue. Overnight, as protesters pelted the Muslim Brotherhood building in Cairo with petrol bombs, Brotherhood supporters fired buckshot in a bid to repel them. An AFP journalist also reported automatic weapons fire. In Tahrir Square, where hundreds of protesters spent the night, demonstrators blew whistles and chanted anti-Mursi slogans. Outside the presidential palace, hundreds more staged a sit-in after the army estimated that millions had heeded the opposition call to protest. Sunday's turnout - on the first anniversary of Dr Mursi's inauguration - was described as the largest protest in Egyptian history. "Long live the people," read Monday's headline in the independent daily al-Tahrir, while Al-Masry al-Youm called it the "June 30 revolution." Anti-Mursi protests were held in Alexandria, the Nile Delta cities of Mansura, Menuf, Tanta and Mahalla, the canal cities of Suez and Port Said and the president's hometown Zagazig. In Tahrir Square, protesters brandished red cards and Egyptian flags as patriotic songs played. "The people want the ouster of the regime," they chanted, echoing the signature slogan of the 2011 revolt that ousted Hosni Mubarak and eventually brought Dr Mursi to power. His supporters have staged counter rallies and there had been fears of major confrontations. But Sunday's anti-government protests eclipsed the loyalists' gathering in Cairo's Nasr City neighbourhood, which the army estimated attracted some 25,000 people. Police and troops had deployed at key buildings nationwide, including at vital Suez Canal installations. Hospitals also went on high alert as banks and most offices closed. Last week, eight people including an American were killed and scores were injured as rivals clashed. Dr Mursi, previously a senior Brotherhood leader, is Egypt's first freely elected president, catapulted to power by the uprising that ended three decades of Mubarak rule. His opponents accuse him of betraying the revolution by concentrating power in Islamist hands and of sending the economy into freefall. Mursi supporters say he inherited many problems from a corrupt regime, and that he should be allowed to complete his term which ends in 2016. Any attempt to remove him would be a coup, they say. Opponents insist calls for his resignation are aimed at restoring the revolution's cornerstones of democracy, freedom and social justice.