Given the task definition and input, reply with output. In this task, you are given a text of many news articles seperated by special token "|||||". Your task is to summarize them.

Media playback is unsupported on your device Media caption "We don't know who is shooting" - Quentin Sommerville reports from Cairo 
  
 At least 42 people have been shot dead near a military barracks in Cairo, amid ongoing unrest following the removal of Egypt's President Mohammed Morsi. 
  
 The Muslim Brotherhood says its members were staging a pro-Morsi sit-in at the barracks, where he is believed to be in detention, when they were fired on. 
  
 But the army said a "terrorist group" had tried to storm the barracks. 
  
 The office of interim president Adly Mansour expressed "deep sorrow" over the deaths and called for restraint. 
  
 In a statement, he too said there had been an attempt to storm the Presidential Guard barracks. 
  
 Mr Mansour ordered the formation of a judicial committee to investigate the clashes, and urged protesters not to approach the military or "vital installations". 
  
 Media playback is unsupported on your device Media caption Muslim Brotherhood: "Soldiers are ruling with fire and steel, with live ammunition" 
  
 The Freedom and Justice Party (FJP), the Brotherhood's political wing - which took nearly half the seats in historic parliamentary elections held in late 2011 and early 2012 - called on Egyptians to stage an "uprising" against "those trying to steal their revolution with tanks". 
  
 It also urged the international community to intervene to "stop further massacres" and prevent Egypt becoming "a new Syria". 
  
 The hardline Salafist Nour party - which had supported Mr Morsi's removal - said it was withdrawing from talks to choose an interim prime minister, describing the shooting incident as a "massacre". 
  
 Analysis There was a sombre mood in Cairo as people woke up to the news of killing and bloodshed. Eyewitness accounts of what happened outside the Presidential Guards Club have inflamed the already simmering tensions. For Egyptians, it is shocking news no matter who started the gunfight. The deadly incident is not the first. On Friday, three protesters were killed at the same spot in unclear circumstances but against a backdrop of a stand-off between the army and the pro-Morsi protesters. The latest shooting is likely to lead to a political breakdown as the Islamist Nour party, the largest Salafist group, withdrew from marathon talks with interim president Adly Mansour to form a caretaker government. 
  
 Mr Morsi, an Islamist and Egypt's first freely elected leader, was ousted by the army last week after mass protests. 
  
 Scores of people have been killed since the unrest began at the end of last month. 
  
 Mr Morsi's supporters - many of them members of his Muslim Brotherhood movement - have been staging a sit-in outside the barracks, accusing the army of mounting a coup. 
  
 There were conflicting reports over what happened there on Monday morning. 
  
 The Brotherhood put the number of dead at 53, and said children were among the victims. 
  
 It said the army raided its sit-in at about 04:00 (02:00 GMT) as protesters were performing dawn prayers. 
  
 "We found the army, around a thousand army troops surrounding us and firing guns, and on the other side of the street the riot police firing tear gas," protester Mohamed Hassan told the Associated Press. 
  
 Media playback is unsupported on your device Media caption The BBC's Aleem Maqbool reports from a hospital treating some of the injured people 
  
 "They are pointing at our heads and chests. I saw with my own eyes 10 martyrs." 
  
 Later, in an emotional news briefing, members of the Brotherhood said military chief Gen Abdul Fattah al-Sisi was "an assassin and a butcher". 
  
 But the health ministry said at least 42 people were killed and some 300 people wounded. 
  
 In a statement read on state media, the army said "an armed terrorist group" had tried to storm the barracks. 
  
 An army officer was among those killed and a number of other soldiers were wounded, some critically, it said. 
  
 One soldier, Mohammed Ibrahim, told state TV from hospital that troops had been at the protest "to ensure the safety of the people". 
  
 "They started firing at us and throwing Molotov cocktails and bricks," he said. 
  
 "I was standing in the middle trying to calm things down and someone came and stabbed me with a piece of metal." 
  
 State TV showed footage of what it said were protesters shooting at soldiers. 
  
 The army's statement also said some 200 people had been arrested and were found to have weapons, ammunition and petrol bombs. 
  
 Prosecutors have also ordered the closure of the FJP headquarters in Cairo, after police said weapons were found inside. 
  
 'Dire state' 
  
 Mr Morsi was ousted on Wednesday by the military. It said it was responding to the demands of the protesters, who accused him of becoming authoritarian and failing to tackle the economy. 
  
 Army's post-Morsi roadmap Constitution to be suspended temporarily and interim president sworn in 
  
 "Strong and competent" civilian technocratic government to be installed 
  
 Supreme Court to pass a draft law on parliamentary election and prepare for parliamentary and presidential polls 
  
 "Charter of honour" to be drawn up and followed by the media 
  
 Measures taken to empower young people and a national reconciliation committee to be formed Coup or no coup? World reaction Profile: Adly Mahmud Mansour 
  
 He was replaced on Thursday by Adly Mansour - the head of the Supreme Constitutional Court. He has pledged to hold elections, but as yet no date has been given. 
  
 The army has insisted it does not want to remain in power. 
  
 On Sunday, tens of thousands of both supporters and opponents of Mr Morsi rallied in many Egyptian cities. 
  
 The BBC's Jim Muir in Cairo says the latest violence has derailed efforts to find a political way out of Egypt's crisis, leaving the country in a dire state. 
  
 The withdrawal of the ultra-conservative Nour party from the political transition talks will also set back efforts to appoint a new prime minister, our correspondent adds. 
  
 Though the Islamist party had backed the army-led "roadmap" to new elections, it had blocked the appointment of two potential prime ministers because of concerns over the shape of a new constitution. 
  
 One of those rejected by Nour, leading opposition figure Mohamed ElBaradei, condemned the violence and called for an "immediate independent and transparent investigation", saying Egypt was "in dire need of reconciliation". 
  
 Bowen: Egypt's failed democratic experiment 
  
 Connolly: An unpresidential democracy 
  
 What next for Muslim Brotherhood? 
  
 Q&A: Egypt in turmoil 
  
 Key players in the Egyptian crisis ||||| A member of the Muslim Brotherhood and supporter of deposed Egyptian President Mohamed Mursi displays spent ammunition after clashes with army in front of Republication Guard headquarters in Nasr City, in the suburb of Cairo July ,8 2013. 
  
 CAIRO | 
  
 CAIRO (Reuters) - The death toll in violence at the Cairo headquarters of the Republican Guard on Monday rose to 51, the head of Egypt's emergency services said. 
  
 The number of wounded was 435, Mohamed Sultan said. 
  
 The military said "a terrorist group" had tried to storm the building. The Muslim Brotherhood said the army opened fire while some Islamist demonstrators were holding morning prayer outside the barracks were toppled President Mohamed Mursi was being held. 
  
 (Reporting By Shadia Nasralla) ||||| A deadly shooting at the site of a sit-in by Muslim Brotherhood supporters in Cairo, demanding the reinstatement of ousted President Mohamed Morsi, has left dozens of people dead. 
  
 The Egyptian health ministry said at least 42 people had been killed and more than 300 injured in the incident early on Monday morning. 
  
 Mohamed Ibrahim El-Beltagy, a Brotherhood MP, described the incident during dawn prayers after police had stormed the site, as a "massacre". 
  
 About 500 people were also reportedly injured. 
  
 A doctor told Al Jazeera that "the majority of injured had gunshot wounds to the head". 
  
 The Brotherhood said the dead and the injured have been taken to a makeshift hospital in Nasr City, a neighbourhood in the Egyptian capital. 
  
 Follow our live coverage 
  
 Speaking to Al Jazeera, Gehad Haddad, a spokesman for Muslim Brotherhood, said that at around 3.30 in the morning, army and police forces started firing at sit-in protesters in front of the Republican Guard headquarters in Cairo. 
  
 'Hit in the head' 
  
 “We have people hit in the head, we have bullets that exploded as they entered the body, cluttering organs and body parts” he said. 
  
 “Every police force in the world understands how to disperse a sit-in. This is just a criminal activity targeting protesters.” 
  
 But the military said a "terrorist group" had tried to storm the Republican Guard facility, where Morsi is reportedly being held. It also said that two officer had also been killed. 
  
 An Al Jazeera correspondent said military checkpoints had been deployed around Nasr City. 
  
 Brotherhood's Haddad said there were two things “the bloodbath” was trying to do. 
  
 “First is that we leave streets and forego the objective of bringing democracy in Egypt after 60 sixty years of military tyranny or they think that our blood is cheaper than any other’s blood in Egypt and no one would care,” he said. 
  
 “We are sticking to our ground, we will not be brought into a cycle of violence, we know how deadly that would be. Even if that means we will have to become the punching bag of the rest of society and our blood will flow for the rest of Egyptians to wake up and the rest of the world to understand that we are adamants of bringing democracy to our country.” 
  
 Dozens have died and more than 1,000 people have been injured in street clashes between supporters and opponents of Morsi in the aftermath of the military coup last Wednesday. 
  
 Also on Monday, Egypt closed down the Cairo headquarters of the Brotherhood, saying weapons were found inside it. 
  
 Analysis from our correspondent Gregg Carlstrom, Cairo It's still unclear who attacked the sit-in. Regardless, it will serve to validate the fears of many of Morsi's supporters, who claim they were attacked first. Many have been worried for the past week that they will be targeted by the army. But it's too early to say what the response will be more generally. The army, for its part, claims that they were attacked first, and at least one officer was killed. The events of the past week have highlighted the army's popularity here, so the competing claims of responsibility may deepen the divisions between supporters of the army and their newly-installed president, and supporters of Morsi. 
  
 The latest violence further raised political tensions, even as the country's interim leadership struggled to find a consensus on who should be the prime minister. 
  
 The Salafist Nour Party announced it was suspending its participation from talks over new government in protest against Monday's fatal shootings. 
  
 Earlier reports said interim president Adly Mansour was leaning towards appointing centre-left lawyer Ziad Bahaa Eldin as prime minister, after members of the Nour Party expressed concern at an earlier suggestion that the job could go to Nobel Laureate Mohamed ElBaradei. 
  
 But some Nour Party members expressed concern that the candidates had political affiliations. 
  
 Younes Makhyoun, Nour's leader, told Reuters: "Both are from the same party, the National Salvation Front, this is rejected. I fear it would be going from one exclusive approach to another," referring to accusations that the Brotherhood tried to monopolise power. 
  
 Meanwhile, the popular Salafist preacher Yaser Borhamy told Al Jazeera that he has nothing against Bahaa el-Din, but "they would rather have someone who does not belong to a political party - a pure technocrat if such thing exists," said Al Jazeera's Hoda Abdel-Hamid. 
  
 She said others from Al Nour had been seen on local media channels saying they approve of Bahaa el-Din. 
  
 AFP reported that the prime minister would be named on Monday, quoting the interim president's adviser. 
  
 Nour had signed up to the army's roadmap for the political transition, giving Islamist legitimacy to an overthrow rejected by Islamic parties aligned to Morsi's Muslim Brotherhood. 
  
 Brotherhood defiant 
  
 Unlike Nour, its bigger rival the Brotherhood has said it would have no part in the military-backed political process. 
  
 The army has denied it staged a coup, saying instead it was merely enforcing the will of the people after mass protests on June 30 calling for Morsi's resignation. 
  
 The pro-Morsi camp is refusing to budge until its leader is restored - an unlikely outcome. 
  
 On the other side of the political divide, hundreds of thousands of Morsi's opponents poured into Cairo's Tahrir Square, the cradle of the popular uprising to oust him. 
  
 On Sunday night, a carnival atmosphere took hold, and a troupe of folk musicians played darabukka drums and mizmar flutes as others danced and let off fireworks. |||||

Egyptian soldiers and police opened fire on supporters of ousted president Mohamed Morsi early today outside a military building in Cairo where demonstrators had been holding a sit-in calling for his release, government officials and witnesses said. The death toll now stands at 51, with 435 injured, according to Reuters. A doctor tells al-Jazeera that "the majority of injured had gunshot wounds to the head." There were conflicting accounts of how the violence began. A military spokesman says gunmen attempted to storm the building at dawn, prompting the clashes, but Morsi supporters say the security forces fired on hundreds of protesters as they performed early morning prayers. Interim President Adli Mansour quickly ordered a judicial committee to investigate the incident, and expressed "deep sorrow" over the deaths, the BBC reports. But he also warned protesters to stay away from the military or "vital installations." The Muslim Brotherhood's Freedom and Justice Party, meanwhile, said the incident was evidence that the international community should step in to prevent Egypt from becoming "a new Syria," while simultaneously urging Egyptians to rise up against "those trying to steal their revolution with tanks."