Khairat al - Shater, the deputy leader of the Muslim Brotherhood, has been arrested, an Egyptian Interior Ministry general has announced."Khairat al-Shater and his brother have been arrested at the request of the prosecution," AFP quoted the general, who spoke on condition of anonymity, as saying on Friday. Shater, a wealthy businessman seen as the movement's main political strategist, was arrested at his apartment in Cairo. Security sources said that he was taken into custody on suspicion of incitement to violence. On Friday, at least 30 people were killed and hundreds of others injured across Egypt during clashes between tens of thousands of opponents and supporters of ousted President Mohamed Morsi, according to Egyptian Health Ministry officials. Earlier in the day, Muslim Brotherhood supreme leader Mohammed Badie said the military coup against Egypt’s first democratically elected president is illegal and millions will remain on the street until Morsi is reinstated as president. He vowed to "complete the revolution" that toppled the Western-backed regime of former Egyptian dictator Hosni Mubarak in 2011. Badie repeatedly referred to Morsi as the president, who was removed from power this week after millions of people protested over his leadership, saying Morsi "is my president and your president and the president of all Egyptians." He vowed Morsi would return to the office soon. "God make Morsi victorious and bring him back to the palace," Badie stated. "We are his soldiers we defend him with our lives." On Wednesday, Egypt's army chief ousted Morsi, who took office in June 2012, and dissolved the country's constitution in a move aimed at resolving the country’s political crisis. General Abdel Fattah al-Sisi also said that new parliamentary elections will be held, and declared head of Supreme Constitutional Court Adli Mansour as the caretaker leader. The Egyptians launched the revolution against the pro-Israeli regime on January 25, 2011, which eventually brought an end to the 30-year dictatorship of Mubarak on February 11, 2011.