Security Forces Surround Parliament in Egypt, Escalating Tensions CAIRO - Egypt's military rulers formally dissolved Parliament Friday, state media reported, and security forces were stationed around the building on orders to bar anyone, including lawmakers, from entering the chambers without official notice. The developments, reported on the Web site of the official newspaper Al Ahram, further escalated tensions over court rulings on Thursday that invalidated modern Egypt's first democratically elected legislature. Coming on the eve of a presidential runoff, they thrust the nation's troubled transition to democracy since the overthrow of Hosni Mubarak last year into grave doubt. The Muslim Brotherhood, the Islamist group that dominates the Parliament, has said it disputes the court's ruling and its authority to dissolve the legislature. Saad el Katatni, the Brotherhood-picked Parliament speaker, accused the military-led government on Friday of orchestrating the ruling. The authorities set up checkpoints overnight and contingents of riot police were moving around the city to prepare for any disturbances. As of midday the streets remained relatively quiet. Mindful of the sweltering sun, organizers called for a demonstration later, just hours before the polls are expected to open for the presidential runoff on Saturday. The rulings on Thursday by the Supreme Constitutional Court, a panel of judges appointed by Mr. Mubarak, dissolved the Parliament and allowed the toppled government's last prime minister to run for president, intensifying a struggle by remnants of the old elite to block Islamists from coming to power. The rulings were quickly condemned as a "coup" by Islamists, liberals and scholars. The court's action, coming two days before a presidential runoff, set up a showdown with the Islamists who dominate in Parliament. They said Thursday night that they refused to dissolve the legislature and vowed to win the presidency despite the signs of opposition within the government overseeing the vote. The military rulers did not issue a statement on the court's decision. But the Web site of the state newspaper Al Ahram reported that the generals said the presidential runoff would still take place on schedule. The rulings recalled events that have played out across the region for decades, when secular elites have cracked down on Islamists poised for electoral gains, most famously when the dissolution of Algeria's Islamist-led Parliament started a civil war 20 years ago. Citing a misapplication of rules for independent candidates, the court sought to overturn the first democratically elected Parliament in more than six decades and the most significant accomplishment of the Egyptian revolt. Many analysts and activists said Thursday that they feared the decision was a step toward re-establishing a military-backed autocracy, though it was not yet clear whether the military leadership was willing to risk a new outbreak of unrest by suppressing the country's most powerful political forces. "From a democratic perspective, this is the worst possible outcome imaginable," said Shadi Hamid, research director of the Brookings Doha Center in Qatar. This is an all-out power grab by the military. The timing of the ruling seems like a transparent attempt to undermine the Islamists just two days before Mohamed Morsi of the Muslim Brotherhood is set to compete in the runoff against Ahmed Shafik, a former air force general and Mr. Mubarak's last prime minister. If the ruling is carried out, whoever wins the presidential race would take power without the check of a sitting Parliament and could exercise significant influence over the elections to form a new one. The new president will also take office without a permanent constitution to define his powers or duties. A 100-member constitutional assembly appointed by Parliament and including dozens of lawmakers may also be dissolved. And in any event, the ruling generals are expected to issue their own interim charter during the drafting. Electing a president without either a constitution or a parliament is like "electing an "emperor" with more power than the deposed dictator. A travesty," Mohamed ElBaradei, the Nobel Prize-winning diplomat and former presidential candidate, said in a comment online. Mayy El Sheikh and Dina Salah Amer contributed reporting.