Image caption Michael Adebolajo is one of the suspects in the murder of Drummer Lee Rigby 
 
 The UK government has defended security services against criticism they missed signs which might have helped prevent the murder of a soldier in London. 
 
 The security services face a Commons inquiry after it was confirmed the two men arrested over the murder of Drummer Lee Rigby were known to MI5. 
 
 But Communities Secretary Eric Pickles said it was impossible to control everyone all the time. 
 
 Michael Adebolajo and Michael Adebowale were named as suspects. 
 
 Mr Pickles told the BBC: "Peers and MPs will do a thorough investigation in terms of what the security forces knew but I've seen experts on security explaining how difficult it is in a free society to be able to control everyone." 
 
 Drummer Rigby, 25, was murdered on a street in Woolwich, south-east London on Wednesday afternoon. 
 
 Shortly after the killing, a man, thought to be 28-year-old Mr Adebolajo, was filmed by a passer-by, saying he had carried out the attack because British soldiers killed Muslims every day. 
 
 Armed police arrived on the scene 13 minutes after the first 999 call and shot the two suspected attackers, who had made no attempt to flee. 
 
 Footage of shooting 
 
 More than 30 people attended a prayer service in Drummer Rigby's hometown of Middleton, Greater Manchester on Friday morning. Residents on the Langley estate where he grew up are being urged to fly union jacks by community activists. 
 
 Drummer Rigby had served in Afghanistan, Germany and Cyprus. 
 
 The former head of counter terrorism at MI6, Richard Barrett, told the BBC how hard it could be to detect attacks of the type seen in Woolwich - despite the suspects having been known to MI5 for eight years. 
 
 "I assume that these people are probably coming out of a small group without, necessarily, any overseas connections or any other broader connections in the United Kingdom which could come to the attention of the security services more than they did," he said. 
 
 "When does a person who expresses radical views, who joins a radical group, flip over to be a violent extremist? 
 
 "To find the signals, the red flags as it were, I think is enormously hard." 
 
 Image copyright Daily Mirror Image caption This still from a video shows Mr Adebolajo after he was shot by police officers 
 
 Former Metropolitan Police commissioner, Lord Blair, told BBC radio he hoped the committee investigating how the suspects were monitored "would act fast" to establish what might have gone wrong. 
 
 "I think it's important for the public to have somebody say within the limits of legality that either something was mistaken, either decisions were badly taken or they weren't, because I think it's important for the public to know security services and the police are operating properly," he said. 
 
 His comments came as video footage, obtained by the Daily Mirror, emerged showing the moment police shot Mr Adebolajo, originally of Romford, east London, and Mr Adebowale, 22, of Greenwich, south-east London. 
 
 It shows one of the men charge at police sitting in a patrol car. He drops a knife as he is shot and falls to the ground. 
 
 Drummers Drummers are musicians as well as fully trained fighting infantrymen 
 
 Can be deployed to any area in the world within 24 hours 
 
 Given drum training, and play drum scores relevant to their regimental tunes 
 
 Some can also play the bugle 
 
 The other man is shown aiming a gun at officers as he runs in a different direction. Police are heard firing eight shots in total at the two men. 
 
 Both of the suspects remain under armed guard in separate London hospitals in stable conditions with non-life-threatening injuries. 
 
 And police are said to be standing guard outside Mr Adebowale's home in Greenwich, according to BBC correspondent Tom Bateman. 
 
 Detectives are also interviewing a man and a woman at a south London police station after they were arrested on Thursday night on suspicion of conspiracy to murder. 
 
 'Solidarity against extremism' 
 
 The BBC has uncovered its own footage of Mr Adebolajo taking part in an Islamist demonstration in April 2007 against the arrest of a man from Luton, holding a placard reading "Crusade Against Muslims". 
 
 Media playback is unsupported on your device Media caption Video has emerged of suspect Michael Adebolajo at an Islamist protest in 2007 (Left, in white clothes) 
 
 He is shown standing next to then-leader of the now banned al-Muhajiroun organisation, Anjem Choudary, who has said Mr Adebolajo went his own way in around 2010. 
 
 Mr Choudary appeared on Newsnight on Thursday and said Mr Adebolajo had made comments that "I think not many Muslims can disagree with". 
 
 The radical Islamist preacher said he was "shocked" by what had happened. He also said: "One man killed in the street does not equate to the hundreds and thousands and millions, in fact, who've been slaughtered by the British and American foreign policy." 
 
 Meanwhile, thousands of members of the Ahmadiyya Muslim community are expected to gather in London to offer prayers for the dead soldier and his family and to "express solidarity against extremism". 
 
 National president Rafiq Hayat said: "We hope that the perpetrators of this crime, that is based on a twisted and warped ideology, are brought to justice." 
 
 On Thursday, Drummer Rigby's family paid tribute to "a loving son, husband, father, brother, and uncle, and a friend to many". 
 
 They said in a statement that Drummer Rigby, who had a two-year-old son, "would do anything for anybody - he always looked after his sisters and always protected them". ||||| Image caption Michael Adebolajo (centre) appeared in court in Kenya in 2010 on suspicion of planning to join a terrorist group 
 
 One of the two men held over the murder of soldier Lee Rigby in a street in Woolwich, south-east London, on 22 May was previously arrested in Kenya, the Foreign Office has confirmed. 
 
 Michael Adebolajo appeared in court after reportedly preparing to train and fight with Somali militant group al-Shabaab in November 2010. 
 
 He is currently being treated in hospital after being shot by police before his arrest in Woolwich. 
 
 Michael Adebowale, who was also shot at the scene, has been discharged from hospital and taken into police custody. 
 
 Police have never formally named the pair but their identities are now well known. 
 
 Michael Adebolajo 
 
 Minutes before the men were arrested in Woolwich, one of them was filmed by a member of the public with his hands bloodstained and holding a knife and meat cleaver. 
 
 Sources have told the BBC he is Michael Adebolajo, 28, from Romford, in east London. 
 
 Mr Adebolajo left school in 2001, where he was described as bright. 
 
 Havering Sixth Form College in Hornchurch, Essex, told the BBC a student named Michael Adebolajo studied for A-levels there from 2001-03. 
 
 Media playback is unsupported on your device Media caption Local man: The people he hung around with were a nightmare 
 
 The University of Greenwich has confirmed records show Mr Adebolajo was registered as a student between 2003 and 2005. It said his academic progress was "unsatisfactory" and he did not complete his studies there. 
 
 Like the other suspect, Michael Adebowale, Mr Adebolajo is a Briton of Nigerian descent and a convert to Islam. 
 
 Mr Adebolajo is understood to come from a Christian family and converted after attending university. 
 
 A neighbour from Romford, who wished to remain anonymous, told the Guardian: "They were very pleasant, a very ordinary normal family." 
 
 His family moved to Lincolnshire, where a house in Saxilby was searched after the attack and residents say Mr Adebolajo spent some time there. 
 
 He's been very outspoken about his concerns and grievances before and he has been arrested for those beliefs as well Mizanur Rahman on Michael Adebolajo 
 
 The address is believed to have been where he, his parents, and his younger brother and sister lived, according to local people, although it appears he may have moved away some time ago. 
 
 Mr Adebolajo's family issued a statement of condolence to Drummer Rigby's family. 
 
 "As a family, we wish to share with others our horror at the senseless killing of Lee Rigby and express our profound shame and distress that this has brought our family," it said. 
 
 "We wholeheartedly condemn all those who engage in acts of terror and fully reject any suggestion by them that religion or politics can justify this kind of violence." 
 
 The statement added: "We unreservedly put our faith in the rule of law and, with others, fully expect that all the perpetrators will be brought to justice under the law of the land." 
 
 Sources have told the BBC Mr Adebolajo was known to the security services. 
 
 He is said to have attended demonstrations of the now-banned Islamist group al-Muhajiroun. 
 
 Mizanur Rahman, who was jailed after a 2006 protest against cartoons depicting the Prophet Muhammad, told the BBC he was sure the police would know who Mr Adebolajo is. 
 
 "He's certainly not a lunatic who's hiding his beliefs," he said. 
 
 "He's been very outspoken about his concerns and grievances before and he has been arrested for those beliefs as well." 
 
 Footage uncovered by the BBC shows Mr Adebolajo taking part in an al-Muhajiroun demonstration in April 2007 against the arrest of a man from Luton. 
 
 He can be seen standing in a crowd of men outside Paddington Green police station, holding a placard reading Crusade Against Muslims. 
 
 In pictures from 2009, Mr Adebolajo can be seen at a counter-demonstration to a march held by the right-wing English Defence League in north-west London. 
 
 A member of the public has told the BBC she saw Mr Adebolajo handing out leaflets and preaching in Powis Street, in Woolwich, a main shopping street. 
 
 A friend of his, Abu Nusaybah, who said he met him in Romford in early 2002, told BBC Two's Newsnight programme he noticed "a change" in Mr Adebolajo when he returned from a trip to Africa last year. 
 
 He said his childhood friend had been detained by security forces in Kenya. 
 
 The Foreign Office later said Mr Adebolajo had been arrested in Kenya in November 2010 and it gave consular assistance "as normal" in the circumstances before he was deported. 
 
 Mr Nusaybah said MI5 asked Mr Adebolajo to work for them after he returned from Kenya, but he refused. 
 
 Human rights group Cageprisoners Ltd said Mr Adebojalo approached it last year to complain he and his family were being "harassed" by British security services. 
 
 Mr Adebojalo and his family claimed they had received numerous phone calls, text messages and visits from British security agents pressuring them to co-operate, Cageprisoners said. 
 
 ITV News has said it understood that Mr Adebolajo became a father a few days before the attack. 
 
 In the footage from Woolwich obtained by ITV News, the man says in a London accent that as long as British troops are in Muslim countries "you people will never be safe" and "We swear by almighty Allah we will never stop fighting you". 
 
 Ingrid Loyau-Kennett, a cub scout leader who confronted Mr Adebolajo after the attack told The Daily Telegraph: "He was not high, he was not on drugs, he was not an alcoholic or drunk, he was just distressed, upset." 
 
 Michael Adebowale 
 
 The second suspect, 22-year-old Michael Adebowale, grew up in south-east London. 
 
 According to the father of Damilola Taylor, the schoolboy stabbed to death in Peckham in 2000, Mr Adebowale's mother is a probation officer and his father a representative at the Nigerian High Commission. 
 
 Mr Taylor told ITV News he acted as a mentor to Mr Adebowala, who was known to his friends as Toby. 
 
 Image caption Michael Adebowale was photographed brandishing a knife and speaking to a woman at the scene 
 
 He said he had known him since the age of 10 after his mother got in touch to say he was experiencing problems in school and was being bullied. 
 
 "He was a young, loving boy" but later it appeared there was issues around gangs and drugs, said Mr Taylor. 
 
 He said he last spoke to Mr Adebowale about two months ago. He told him he had changed his ways after becoming a Muslim. 
 
 A story in the Guardian said Mr Adebowale was stabbed in January 2008, when a man attacked him and two friends at a flat, killing one of them. 
 
 Sources have told the BBC he was known to the security services. 
 
 At the time of the Woolwich attack, Mr Adebowale was understood to have been staying with his girlfriend in her flat on a Greenwich housing estate later raided by police. 
 
 Nicola James, who lives in the same block, said he had been there for "at least the last three weeks", while another neighbour confirmed he had seen both suspects at the flat "two or three times". 
 
 One resident said he often saw Mr Adebowale in the lift and described him as a "nice, quiet guy". 
 
 Another said from what he knew of Mr Adebowale, "he wouldn't go from a normal bloke to doing that. He must have been brainwashed into doing it." 
 
 According to a report on Sky News, he was among a group of men who preached from a stall on a shopping street in Greenwich from 2012 and store owners report seeing him detained by police about two months ago. 
 
 Cub scout leader Ingrid Loyau-Kennett said she also spoke to Mr Adebowale at the scene of the attack and described him as "much shier" [than Mr Adebolajo]. ||||| Counterterrorism police on Saturday questioned a friend of Michael Adebolajo, one of two suspects in the killing of an unarmed British soldier, a savage attack that has horrified Britain. 
 
 FILE - In this Friday, May 24, 2013 file photo, military boots are laid in tribute outside the Woolwich Barracks, in London, in response to the bloody attack on Wednesday when a British soldier was killed... (Associated Press) 
 
 The friend, Abu Nusaybah, was arrested immediately after he gave a BBC Television interview describing how Adebolajo may have become radicalized and alleging that Britain's security services tried to recruit him. Police said Nusaybah was wanted on suspicion of involvement in unspecified acts of terrorism. 
 
 Nusaybah said Adebolajo became withdrawn after returning last year from a visit to Kenya, where he claimed he had been arrested and then abused both physically and sexually while in jail. Nusaybah claimed that Britain's domestic spy agency, MI5, approached Adebolajo to recruit him upon his return to Britain about six months ago. 
 
 Adebolajo, 28, and Michael Adebowale, 22, are suspected of killing soldier Lee Rigby by hacking his body with knives and a meat cleaver in front of dozens of passersby Wednesday in the southeast London district of Woolwich. The horrific scene was recorded on witnesses' cellphones, with one of the two suspects making political statements and warning of more violence as the soldier lay on the ground. 
 
 Police shot both men as they arrived minutes after Rigby's slaying. Both suspects remain under armed guard at two London hospitals. 
 
 Questions abound over what could have led the two men to attack Rigby, a 25-year-old ceremonial military drummer and machine-gunner who had served in Afghanistan and was off duty when he was walking near his barracks. Nusaybah's interview offered one possible narrative. He said Adebolajo's behavior changed after he allegedly suffered abuse at the hands of Kenyan security forces. 
 
 "Although that change wasn't necessarily one that became overt, aggressive or anything like that, he became ... less talkative. He wasn't his bubbly self," Nusaybah told the BBC. 
 
 He said MI5 agents approached Adebolajo after he returned to Britain and initially asked him if he had met specific Muslim militants, then asked Adebolajo if he was willing to act as an informer. 
 
 "He was explicit in that he refused to work for them," Nusaybah said. 
 
 The BBC said police arrested Nusaybah outside its studios Friday night immediately after recording the interview. 
 
 "This interviewee had important background information that sheds light on this horrific event," the BBC said in a statement. "And when we asked him to appear and interviewed him, we were not aware he was wanted for questioning by the police." 
 
 London police confirmed that a 31-year-old man was arrested Friday night on suspicion of "the commission, preparation or instigation of acts of terrorism." Police declined to identify Nusaybah by name or provide further detail. 
 
 It was not immediately possible to verify the information provided by Nusaybah, who said he had known Adebolajo for about a decade. MI5 does not publicly discuss its efforts to recruit informers. 
 
 It is not uncommon, however, for special services officers to occasionally visit communities to ask people if they know potential terror suspects or others under MI5 surveillance. 
 
 Potential informants go through a screening process to determine if they should be trusted, what their motivation might be and whether their information would be likely to be accurate. 
 
 Nusaybah said Adebolajo was converted to Islam around 2004. His account corroborates those provided by two Muslim hard-liners who said they also knew Adebolajo. 
 
 Anjem Choudary, a former leader of a banned British radical group called al-Muhajiroun, said Adebolajo was a Christian who converted to Islam around 2003. Choudary told The Associated Press that Adebolajo participated in several of the group's London demonstrations before Britain outlawed the group in 2010. 
 
 Omar Bakri Muhammad, another former al-Muhajiroun leader and radical Muslim preacher, said Adebolajo attended his London lectures in the early 2000s. Muhammad fled London and resettled in Lebanon in 2005 after suicide attacks on London's public transit system killed 56 people, including four bombers. 
 
 Police have not officially named the two suspects. The AP has received confirmation of their identities from British officials speaking on condition of anonymity because they are not authorized to disclose the information. 
 
 Few details have emerged about Adebowale besides one reported brush with death as a teenager. 
 
 The Guardian reported Saturday that Adebowale was stabbed in 2008, when a man attacked him and two friends in a London apartment. One 18-year-old friend died and the attacker received a life sentence for murder, the newspaper said. 
 
 MI5 Director-General Andrew Parker is expected to deliver a preliminary report next week to Parliament's Intelligence and Security Committee detailing what the agency knew about both suspects and whether MI5 could have done anything to stop the attack. 
 
 The directors of Britain's foreign spy agency, MI6, and Britain's eavesdropping agency, GCHQ, also are expected to give reports on what intelligence they had on the two men. 
 
 ___ 
 
 Associated Press writer Paisley Dodds contributed to this report.
– The plot to kill a soldier in the streets of London may have gone deeper than the two men who hacked Lee Rigby to death. Police yesterday arrested two more people, a man and a woman, both 29, as suspected conspirators in the attack, the Wall Street Journal reports. They also searched the homes of six people—including, reportedly, suspect Michael Adebolajo's father's home. Neither these two conspirators nor the wounded alleged killers have been charged yet. Other developments include: Police also haven't identified any of the suspects, but Adebolajo's name was widely reported yesterday, and today the Telegraph has identified the other alleged knife-man as the confusingly similarly named Michael Adebowale, 22. Neighbors identified Adebowale after police armed with submachine guns raided his flat yesterday, emerging with two children, a baby, and two large envelopes. Adebowale was apparently known for distributing radical Islamist leaflets, and his girlfriend had recently converted to Islam. "When you walked past, you would hear them singing Muslim songs," one neighbor says, adding that she "saw the man who was in the video go inside the house. I think he was a boyfriend." Rigby, "was due to come up this weekend," his wife tells the Guardian. "You don't expect it to happen when he's in the UK. You think they're safe." The Daily Mirror has uncovered video that purports to show the two suspects rushing at police and getting shot. There's also been a great deal of hand-wringing over MI5's failure to identify the stabbers ahead of time. David Cameron is calling for an investigation to determine "what went wrong" at the intelligence agency. Communities Secretary Eric Pickles has promised just such an investigation. But he also defended the agency to the BBC, saying it was "difficult in a free society to be able to control everyone."