Sheik Mazhar Shahin became known as the "preacher of the revolution" for his sermons in a mosque overlooking Tahrir Square criticising ousted President Hosni Mubarak and the country's interim military rulers.
Although Shahin backed Islamist Mohammed Mursi's candidacy for president, he grew critical of him. In a recent sermon, Shahin faulted Mursi for failing to reach out to opponents, warning of attempts by his Muslim Brotherhood to control state institutions. The sermon prompted the complaint and subsequent suspension.