Boston bombs: Officials wait to question Dzhokhar Tsarnaev A top US interrogation group is waiting to question the surviving suspect in the Boston Marathon bombings. Dzhokhar Tsarnaev, 19, was arrested late on Friday when he was found seriously injured in a suburban backyard after a huge manhunt. He is under armed guard in hospital. Massachusetts Governor Deval Patrick said the suspect was stable, but not yet able to communicate. The teenager's brother, Tamerlan, died after a shoot-out with police. Three people were killed and more than 170 others injured by Monday's twin bombing, close the finish line of the Boston Marathon. Analysis Rajesh Mirchandani BBC News, Washington DC Miranda warnings - or more usually, Miranda rights - are designed to remind a suspect who has been arrested or is questioned in custody that they have certain constitutional rights, including the right to remain silent so as not to incriminate themselves and to have an attorney present during questioning. Police officers are required to recite them, although not necessarily word for word, to a suspect. But there is an exception - and that's what happened in the case of the Boston bombing suspect Dzokhar Tsarnaev. The exception was identified in a 1984 Supreme Court ruling which stated that "the need for answers to questions in a situation posing a threat to the public safety outweighs the need for the prophylactic rule protecting the Fifth Amendment's privilege against self-incrimination". The exception has been used in a couple of high profile terror-related cases in recent years: against Umar Farouk Abdulmutallab, who was stopped while trying to set off a bomb hidden in his underpants on a plane bound for Detroit on Christmas Day 2009, and against Faisal Shahzad, who tried to detonate a bomb in New York's Times Square in 2010. Applied to the Boston manhunt, if officers had read Dzhokhar Tsarnaev his Miranda rights, he might have stayed silent about any more bombs, any more attacks planned - or any co-conspirators. Police officer Sean Collier was shot dead during the police operation to find the brothers on Thursday night. A transport officer was later seriously injured in the shoot-out which left Tamerlan Tsarnaev fatally wounded. On Saturday, President Barack Obama met his top security advisors to review the events in Boston. He has vowed to seek answers on what motivated the alleged bombers and whether they had help. Dzhokhar Tsarnaev was found by a member of the public on Friday evening, shortly after a city-wide lockdown was ended. He was injured and hiding in a boat in a backyard, and was reportedly further injured in a fire fight with police. The High-Value Detainee Interrogation Group - a multi-security agency unit specialising in questioning terror suspects - is waiting at the Beth Israel Deaconess Medical Center in Boston as he recovers. The BBC's David Willis, outside the hospital, says the suspect is suffering gunshot wounds to the neck and leg and has lost a lot of blood, so it could be a while before investigators are able to talk to him. CBS News quoted investigators as saying that a wound to the neck may have been a suicide attempt. Prosecutors are also at the scene, determining what charges the teenager might eventually face. A federal charge of using a weapon of mass destruction to kill people carries a possible death sentence. There is no death penalty in the state of Massachusetts.Syria crisis: US steps up aid to rebels at talks in Turkey US Secretary of State John Kerry has announced a doubling of US aid to Syria's rebels and told a Friends of Syria meeting its members were committed to a peaceful transition. Mr Kerry told the meeting in Istanbul that the US would provide Syrian rebels $123m (£81m) in new, non-lethal aid. He said President Barack Obama was committed to a "democratic, unified, post-Assad Syria". More than 60,000 have died in the two-year uprising against Bashar al-Assad. Mr Kerry also announced that all aid from the 11 countries known as the Friends of Syria would now be channelled through the Turkey-based Free Syrian Army group headed by Gen Salim Idris. The meeting in Istanbul brought together the foreign ministers of countries opposing the government of President Assad. Mr Kerry said the meeting had brought significant advances. He said: "The situation in Syria is horrific. It is horrible." He accused the Assad government of "using ballistic missiles against innocent people" and "using his air force to rain down terror on the people of his country". Mr Kerry said Mr Obama had instructed him to step up efforts with the opposition and that the Friends of Syria were committed to a "mutually consented transitional government and then an elected new leader". The rebels have been pushing for military supplies and insisted in Istanbul that any weapons they received would not "fall into the wrong hands". The US and EU have so far refused to supply the rebels with weapons. The Western allies are concerned that they may end up in the hands of Islamist extremists inspired by al-Qaeda. Before the Istanbul talks, the main opposition expressed its frustration with the lack of support, urging allies to act more decisively. In a statement quoted by the AFP news agency, the Syrian National Coalition said: "It is the moral imperative of the international community, led by the Friends of Syria, to take specific, precise and immediate action to protect Syrian civilians from the use of ballistic missiles and chemical weapons." It also called for "surgical strikes" on positions it alleged were being used by Syrian government troops to fire missiles. Both Damascus and the rebels accuse each other of using chemical weapons. UN Secretary Ban Ki-moon has recently announced an investigation into the allegations, and a team of UN-led experts is now in Cyprus awaiting permission to enter Syria.jolley bibliotaph ovuliferous folkloristics squadrism ell quagga frazil gigot centuple latrocinate mutagenesis rodenticide