Hes understood to have been born in manchester to a family of libyan origin. Police and Security Services launched a wide ranging investigation, as the Prime Minister shared the outcome of the latest meeting of the cabinet Emergency Committee. It is now concluded, on the basis of todays investigations, that the threat level should be increased, for the time being, from severe to critical. Among the thousands of fans at the arena last night, there were many whod been looking forward to the concert for a long time. It had been building up for me, for like years. Since we got the tickets, it was so exciting. Its turned into like the most traumatic thing. Well be reporting on the remarkable strength of spirit among the people of manchester and how the community has responded. And well talk to people who attended tonights vigil in the heart of the city, where they heard a message of strength and solidarity. And in other news tonight the actor sir roger moore has died at the age of 89. He was best Known For Playing The Spy james bond. His family said hed had a short but brave battle with cancer. Good evening. Were in manchester where the worst Terror Attack Britain has seen in 12 years took place late last night, at the end of a pop concert in the Manchester Arena. 22 people, including some children, are known to have died and 59 people were injured, when a Suicide Bomber detonated a device as people were leaving the concert. Police have named the suspect as 22 year old salman abedi. The bbc understands he was born here in manchester from a family of libyan origin. Tonight, the Prime Minister, a few moments ago, announced that the Terror Threat level is being raised from severe to critical. That is the very highest level. Mrs may said it was possible that salman abedi was pa rt was possible that salman abedi was part of a network, planning further attacks. Our first report tonight, in this extended programme, is by our chief correspondent, gavin hewitt. There are distressing images in his report on the attack. Police were called to the arena just after 10. 30pm Last Night after the performance from the American Star, Ariana Grande. The explosion happened in the foyer that connects the venue to victoria train station. Those injured are being treated at eight hospitals in the Greater Manchester region. Earlier today the Prime Minister chaired the first of todays meetings of the cabinets Emergency Committee, known as cobra. She made a statement in Downing Street, condemning the callous, appalling and sickening attack, before then making her way to manchester to see police and members of the Emergency Services here. All Election Campaigning was suspended for the day. Our first report tonight, in this extended programme, is by our chief correspondent, gavin hewitt. There are some distressing images in his report on the attack. Ariana grandes concert was coming to an end. From the foyer, the sound ofan to an end. From the foyer, the sound of an explosion. 0h, to an end. From the foyer, the sound of an explosion. Oh, my god. Whats going on. Whatjust happened. Whats going on. Whatjust happened. Whats going on. Whatjust happened. Whats going on. Oh, my god there were screams, going on. Oh, my god there were screams, then running. A crowd of children, teenagers, parents, all heading for whatever exit they could find. Near the entrance, 22 people we re find. Near the entrance, 22 people were killed, around 60 were injured. Suddenly, a massive flash, a bang, smoke and my wife, i had lay her down on the floor. Shes got bruising there. Shes had one thats under her chin there and bruised. Shes probably broken herfever in her left leg. Femur. Something really hot just flew over us and landed behind me and my mum and my sister. Then we all like dropped to the floor, but then my mum told me theyre running, then i realised when i tried to run back, in because i was worried, i shouted my mum, but i couldnt hear anything because this ear is all blocked and it were just really scary. All i could hear was screaming, people crying. Everyone wasjust was screaming, people crying. Everyone was just running everywhere. It was completely madness. This is a Public Safety announcement. It was like out of a film, everyone cramming through. People had cuts like on their arms and their legs. The injured were taken to eight hospitals across Greater Manchester. Some families and friends were split up in the rush to get emergency treatment. Armed police units patrolled the streets by the arena, before the night was over, the police knew they we re night was over, the police knew they were dealing with an attack by a Suicide Bomber, with a home made Explosive Device packed with metal fragments. During the night, specialist teams were brought in, in case there were other Explosive Devices. It was a deliberate attack on children and young people, timed just at the moment when parents were waiting to pick up their sons and daughters. 400 Police Officers were deployed along with forensic teams. Earlier on, police knew the identity of the bomber, but they didnt reveal his name until late afternoon. I can confirm that the man suspected of carrying out last nights atrocity is 22 year old salman abedi, however he has not yet been formally named by the coroner andi been formally named by the coroner and i wouldnt wish to therefore comment any further about him at this stage. Salman abedi was the son of refugees, a student at salford university. On the streets today, survivors, reliving the terror of a concert that ended with murder. This is helen and issa bella. We hit the corridor, when we saw masses of people running in absolute terror and panic to get out of the place young, teenage children, 14, 15. There were mothers with children carrying them over their shoulder. There were people with even wheelchairs panicking to get out. Laura and isabellas concert ended ina laura and isabellas concert ended in a chaotic search for an exit. We just ran, i dont know which entrance we came out of, we just ran. But we also found two girls that had lost their parents or had to get home on their own. We were they were very scared, obviously, because they were on their own. Thank you. Manchester has been a city on edge today. Shaken by alerts and rumours and a Shopping Centre evacuated. It is now beyond doubt that the people of manchester and of this country have fallen victim to a callous terrorist attack, an attack that targeted some of the youngest people in our society, with cold calculation. This was among the worst Terrorist Incidents we have ever experienced in the United Kingdom and although it is not the first time manchester has suffered in this way, it is the worst attack the city has experienced and the worst ever to hit the north of england. Dozens of people are still trying to trace loved ones after last nights bombing. Among the missing, olivia campbell, aged 15. Some of the first victims of the attack have been named. Georgina callander was aged 18, seen here with Ariana Grande at a previous event. John at kin son, aged 28 from bury. And eight year old Saffie Roussos was among those killed. It was an attack directed at young people, at innocence. During the day, police raided a number of houses, a 23 year old man was arrested in connection with yesterdays bombing. An attack on a family event happened here last night was long feared. Preventing a determined Suicide Bomber is incredibly difficult. The priority for the police will be to discover everything they can about this man, whether hes part a Wider Network and whether there is a risk of further attacks. Tonight, the Prime Minister raised the threat level to its highest category. It is now concluded, on the basis of todays investigations that the threat level should be increased, for the time being, from severe to critical. This means that their assessment is not only that an attack remains highly likely, but that a further attack may be imminent. Tonight, thousands of people gathered outside the town hall ina of people gathered outside the town hall in a mark of defiance. One by one, members of different faiths insisted they would not be cowed. These were sikhs with placards, i love manchester. Then the crowd heard from a local poet tony walsh. Theres hard times again in these streets of our city, but we wont ta ke d Efeats Streets of our city, but we wont take defeats and we dont want your pity because this is is the place where we stand strong together, with a smile on ourface, mancunians forever, because this is the place in our hearts, in our homes, because this is the place thats a part of our bones. Because manchester gives us our bones. Because manchester gives us such strength from the facts that this. Is the place. Defiance, yes, but questions too as to what drove a young man to murder so many. Gavin hewitt, bbc news. That statement tonight by the Prime Minister when she announced that the Terror Threat level has been increased to critical, that is the highest level, she made that statement in the past half hour or so in ten Downing Street. Lets talk about that decision. We talk to our Security Correspondent at M15 Headquarters in Central London and our Political Editor in Downing Street. Gordon, first of all, talk to us about this decision to raise the threat level and what that means in practical terms. Yes, the threat level and what that means in practicalterms. Yes, the announcement was made based on intelligence from the joint terrorism analysis centre, which is based here in m15. It is only the third time ever that the threat level has gone up to its highest level has gone up to its highest level and the first time in ten yea rs. Level and the first time in ten years. Now why has it happened . Well a source ive been speaking to has said all day the focus of the investigation has been did Salman Abedi Act alone or was he part of a network . And this evening, they could not resolve that there werent other people who could still be out there and pose a threat. They are not saying they know for certain that there are others out there, who are planning an attack. Theyjust cannot rule that out at the moment and based on that, the Prime Minister has taken the decision that an attack may be imminent and the threat level needs to be raised to critical. What does it mean in practice . What it means advisably, tomorrow, we will see the military out on the streets in places where previously we would have seen armed police. That will be the visible sign something called operation tempura. Behind the scenes, the effo rts tempura. Behind the scenes, the efforts here at m15 will be trying to resolve that question are there other people out there still who pose a real threat . Other people out there still who pose a realthreat . Gordon, thank you. Lets go to Downing Street and talk to laura. Second time today, laura, the Prime Ministers chaired the Emergency Committee known as cobra. What are Downing Street telling you tonight . Its a very serious step for any government to make, raising the threat level like this, a step that has not been taken on the advice of the Security Services for ten years. Of course, its a step that members of the public will see and feel when theyre out and about tomorrow, as gordon was saying. In some places we will see members of the military on the streets supporting the police. This is a big step for any Prime Minister to take and its one that has obviously not been taken lightly. Its clear theres a wider belief in government its not possible to rule out the possibility there was a wider plot in action here. There could have been, there could yet be a bigger group of individuals whod been involved in the horror of what unfolded last night with potential plans for something else. Of course, this is all unfolding right in the middle of all unfolding right in the middle of a general Election Campaign, a campaign thats been characterised by clamour and noisy debate. But in the last few minutes, all the main parties have confirmed that for them, the campaigning tomorrow is out of the question. The campaign, their hostilities, are suspended the Jeremy Corbyn and theresa may have beenin Jeremy Corbyn and theresa may have been in frequent touch today, im told. Theyve spoken again in the last couple of hours. This is a moment when despite all their political disagreements, tonight, for once, the Political Parties are in agreement about one thing that their disputes with each other come second to the security of us all. Thank you again, with the latest from Downing Street and m15, in Central London. As weve heard, the first victim to be named was Georgina Callander, an 18 year old student at Runshaw College in lancashire. Another of the victims wasJohn Atkinson, who was 28. And the youngest to be named so far was Saffie Roussos, who was eight years old, from leyland, in lancashire. They were among the thousands who had travelled to the Manchester Arena for the concert by the american singer Ariana Grande. Our Special Correspondent, ed thomas, reports now on the victims of terror. The youngest life lost eight year old Saffie Roussos, at the concert with her mother and sister from lancashire. Today, her headteacher said she was simply a beautiful little girl, loved by everyone. Also killed, student Georgina Callander. She idolised Ariana Grande. This was the teenager meeting the singer in 2015. This afternoon, Runshaw College in leyland said our thoughts and prayers go out to all of georginas family, friends, and all of those affected by this loss. Its devastating. My daughter left for school at 8 30am this morning and i was just praying that nobody from her school was involved, and around 11 oclock, the school announced Georgina Callander had been confirmed, that she passed away last night, and then tarleton, another one down the road so, you know, all within four miles, two younger ones have died. Also confirmed among the 22 who died, John Atkinson from bury. Friends said the 28 year old old was an amazing young man. And tonight, families are still waiting to hearfrom loved ones, people like Chloe Rutherford and liam curry, from south shields, Courtney Boyle and philip tron from gateshead, the daughter of angelika and marcin klis has asked for help finding her parents. Wendy fawell from leeds has not been found. And mothers alison howe and lisa lees are not accounted for after visiting the arena to collect their children. Behind every face, a desperate search. You havent seen this girl by any chance, have you . Excuse me, im just asking if youve seen this young girl . Have you seen this girl . She was at the concert last night. This is the uncle of 15 year old olivia campbell. Her family asked us and other media to show her picture and publicise the search from hotels to hospitals. We have been as close as we can to the arena. Backstreets. Hospital. We have Friends And Family going to other hospitals, friends in blackburn who work there, looking at their hospital. We arejust coming to an end. We need to get in contact if anyone sees her. Just a phone call and we can go and get her. Manchester is also remembering the injured. 59 people were taken to hospital. Its thought 12 of the casualties are children under 16. Clearly, there are a number of individuals who have very, very serious injuries and are requiring Intensive Care. And people who are going to be in hospitalfor a long time. And tonight, at least some cause for hope. Laura mcintyre, here on the left, has been found in hospital in a series condition, but alive. Her friend from the isle of barra, Eilidh Mcleod, is still missing. Its beyond comprehension and understanding. We know that laura is in hospital with serious injuri